From 0763758b678c1740fde0b7d67d90d1d67529be07 Mon Sep 17 00:00:00 2001 From: Aolin Date: Fri, 25 Jul 2025 11:40:04 +0800 Subject: [PATCH 01/27] v7.5.7: add release notes --- releases/release-7.5.7.md | 192 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 192 insertions(+) create mode 100644 releases/release-7.5.7.md diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md new file mode 100644 index 0000000000000..d7e07d4cb87d2 --- /dev/null +++ b/releases/release-7.5.7.md @@ -0,0 +1,192 @@ +--- +title: TiDB 7.5.7 Release Notes +summary: Learn about the compatibility changes, improvements, and bug fixes in TiDB 7.5.7. +--- + +# TiDB 7.5.7 Release Notes + +Release date: xx xx, 2025 + +TiDB version: 7.5.7 + +Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with-tidb) | [Production deployment](https://docs.pingcap.com/tidb/v7.5/production-deployment-using-tiup) + +## Compatibility changes + +- note [#issue](https://github.com/pingcap/${repo-name}/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + +## Improvements + ++ TiDB + + - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - (dup): release-8.5.3.md > 改进提升> TiDB - 新增导入期间分裂 region 和 ingest 数据的流控接口 [#61553](https://github.com/pingcap/tidb/issues/61553) @[tangenta](https://github.com/tangenta) + - (dup): release-8.2.0.md > Improvements> TiDB - Optimize the performance of obtaining data distribution information when performing simple queries on tables with large data volumes [#53850](https://github.com/pingcap/tidb/issues/53850) @[you06](https://github.com/you06) + - (dup): release-8.5.3.md > 改进提升> TiDB - 新增加索引的导入速度监控 [#60925](https://github.com/pingcap/tidb/issues/60925) @[CbcWestwolf](https://github.com/CbcWestwolf) + ++ TiKV + + - note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - (dup): release-8.5.3.md > 改进提升> TiKV - 优化 raftstore 中 `CompactedEvent` 的处理逻辑，将其移至 `split-check` worker 执行 [#18532](https://github.com/tikv/tikv/issues/18532) @[LykxSassinator](https://github.com/LykxSassinator) + - (dup): release-8.1.0.md > Improvements> TiKV - Add metrics for memory usage per thread [#15927](https://github.com/tikv/tikv/issues/15927) @[Connor1996](https://github.com/Connor1996) + - (dup): release-8.5.3.md > 改进提升> TiKV - 移除 “sst ingest is too slow” 的日志，避免引发性能抖动 [#18549](https://github.com/tikv/tikv/issues/18549) @[LykxSassinator](https://github.com/LykxSassinator) + - (dup): release-7.1.6.md > Improvements> TiKV - Optimize the jittery access delay when restarting TiKV due to waiting for the log to be applied, improving the stability of TiKV [#15874](https://github.com/tikv/tikv/issues/15874) @[LykxSassinator](https://github.com/LykxSassinator) + - (dup): release-8.5.3.md > 改进提升> TiKV - (dup): release-9.0.0.md > 改进提升> TiKV - 优化残留数据清理机制，减少对请求延迟的影响 [#18107](https://github.com/tikv/tikv/issues/18107) @[LykxSassinator](https://github.com/LykxSassinator) + - (dup): release-8.5.3.md > 改进提升> TiKV - 修复 TiKV 正常退出时未能中止正在进行的手动 Compaction 任务的问题 [#18396](https://github.com/tikv/tikv/issues/18396) @[LykxSassinator](https://github.com/LykxSassinator) + - (dup): release-8.5.3.md > 改进提升> TiKV - 优化 Raft-Engine 中 `fetch_entries_to` 的性能，减少竞争，提升混合负载下的执行性能 [#18605](https://github.com/tikv/tikv/issues/18605) @[LykxSassinator](https://github.com/LykxSassinator) + - (dup): release-8.4.0.md > Improvements> TiKV - Support dynamically modifying flow-control configurations for write operations [#17395](https://github.com/tikv/tikv/issues/17395) @[glorv](https://github.com/glorv) + - (dup): release-8.5.3.md > 改进提升> TiKV - 支持在不阻塞前台写入的情况下导入 SST 文件，降低延迟影响 [#18081](https://github.com/tikv/tikv/issues/18081) @[hhwyt](https://github.com/hhwyt) + - (dup): release-8.5.3.md > 改进提升> TiKV - 支持在不阻塞前台写入的情况下导入 SST 文件，降低延迟影响 [#18081](https://github.com/tikv/tikv/issues/18081) @[hhwyt](https://github.com/hhwyt) + - (dup): release-8.5.3.md > 改进提升> TiKV - 改进分盘部署场景下 kvdb 磁盘 I/O 抖动的检测机制 [#18463](https://github.com/tikv/tikv/issues/18463) @[LykxSassinator](https://github.com/LykxSassinator) + - (dup): release-6.5.9.md > Improvements> TiKV - Add slow logs for peer and store messages [#16600](https://github.com/tikv/tikv/issues/16600) @[Connor1996](https://github.com/Connor1996) + ++ PD + + - note [#issue](https://github.com/tikv/pd/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/tikv/pd/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - (dup): release-8.5.3.md > 改进提升> PD - 优化了 balance region 调度器的算分公式 [#9145](https://github.com/tikv/pd/issues/9145) @[bufferflies](https://github.com/bufferflies) + - (dup): release-8.5.3.md > 改进提升> PD - 增加了 GO Runtime 相关监控 [#8931](https://github.com/tikv/pd/issues/8931) @[bufferflies](https://github.com/bufferflies) + ++ TiFlash + + - note [#issue](https://github.com/pingcap/tiflash/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/pingcap/tiflash/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - (dup): release-8.5.3.md > 改进提升> TiFlash - 增强 TiFlash 在宽表场景下 OOM 风险相关的监测指标 [#10272](https://github.com/pingcap/tiflash/issues/10272) @[JaySon-Huang](https://github.com/JaySon-Huang) + - (dup): release-8.5.3.md > 改进提升> TiFlash - 增加 TiFlash 获取存储层快照重试次数来增强大表上查询的稳定性 [#10300](https://github.com/pingcap/tiflash/issues/10300) @[JaySon-Huang](https://github.com/JaySon-Huang) + - (dup): release-8.1.0.md > Improvements> TiFlash - Mitigate the issue that TiFlash might panic due to updating certificates after TLS is enabled [#8535](https://github.com/pingcap/tiflash/issues/8535) @[windtalker](https://github.com/windtalker) + ++ Tools + + + Backup & Restore (BR) + + - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - (dup): release-8.5.3.md > 改进提升> Tools> Backup & Restore (BR) - 如今即便指定了 `-f` 来过滤表，BR 也会对集群内是否存在表进行检查 [#61592](https://github.com/pingcap/tidb/issues/61592) @[RidRisR](https://github.com/RidRisR) + - (dup): release-8.5.3.md > 改进提升> Tools> Backup & Restore (BR) - 如今，TiKV 的 Download API 支持裁切掉 SST 中某段时间的数据 [#18399](https://github.com/tikv/tikv/issues/18399) @[3pointer](https://github.com/3pointer) + + + TiCDC + + - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - (dup): release-8.5.3.md > 改进提升> Tools> TiCDC - 修复在包含虚拟列的表中计算事件过滤表达式时出现的 Panic 错误 [#12206](https://github.com/pingcap/tiflow/issues/12206) @[lidezhu](https://github.com/lidezhu) + - (dup): release-8.5.3.md > 改进提升> Tools> TiCDC - 修复 dispatcher 配置中列名/索引名大小写敏感匹配的问题 [#12103](https://github.com/pingcap/tiflow/issues/12103) @[wk989898](https://github.com/wk989898) + - (dup): release-8.5.3.md > 改进提升> Tools> TiCDC - 修复在相同 IP 地址上扩缩容 TiKV 节点后，因使用过期的 store ID 导致 resolved ts 延迟持续上升的问题 [#12162](https://github.com/pingcap/tiflow/issues/12162) @[3AceShowHand](https://github.com/3AceShowHand) + + + TiDB Data Migration (DM) + + - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + + + TiDB Lightning + + - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + + + Dumpling + + - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + + + TiUP + + - note [#issue](https://github.com/pingcap/tiup/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/pingcap/tiup/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + +## Bug fixes + ++ TiDB + + - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - (dup): release-8.5.3.md > 错误修复> TiDB - 修复 IndexMerge/IndexLookUp 算子下发查询时共享 kv request 导致的 data race [#60175](https://github.com/pingcap/tidb/issues/60175) @[you06](https://github.com/you06) + - (dup): release-9.0.0.md > Bug fixes> TiDB - Fix a potential goroutine leak issue in the Hash Aggregation operator [#58004](https://github.com/pingcap/tidb/issues/58004) @[xzhangxian1008](https://github.com/xzhangxian1008) + - (dup): release-7.6.0.md > Bug fixes> TiDB - Fix the issue that MPP plans might not be selected when indexes on generated columns are set as visible [#47766](https://github.com/pingcap/tidb/issues/47766) @[AilinKid](https://github.com/AilinKid) + - (dup): release-8.5.3.md > 错误修复> TiDB - 为包含 `_charset(xxx), _charset(xxx2), ...` 的 SQL 生成同样的 digest [#58447](https://github.com/pingcap/tidb/issues/58447) @[xhebox](https://github.com/xhebox) + - (dup): release-8.5.3.md > 错误修复> TiDB - 修复频繁合并 region 导致 TTL 任务无法启动的问题 [#61512](https://github.com/pingcap/tidb/issues/61512) @[YangKeao](https://github.com/YangKeao) + - (dup): release-8.5.3.md > 错误修复> TiDB - 修复执行有损 DDL 后，查询 TiFlash 数据不一致的问题 [#61455](https://github.com/pingcap/tidb/issues/61455) @[Lloyd-Pottiger](https://github.com/Lloyd-Pottiger) + - (dup): release-8.5.3.md > 错误修复> TiDB - 修复了 `ALTER RANGE meta SET PLACEMENT POLICY` key 范围错误的问题 [#60888](https://github.com/pingcap/tidb/issues/60888) @[nolouch](https://github.com/nolouch) + - (dup): release-8.5.2.md > Bug fixes> TiDB - Fix the issue that the data in the **Stats Healthy Distribution** panel of Grafana might be incorrect [#57176](https://github.com/pingcap/tidb/issues/57176) @[hawkingrei](https://github.com/hawkingrei) + - (dup): release-8.5.3.md > 错误修复> TiDB - 修复 latin1_bin 与 utf8mb4_bin, utf8_bin 的比较方式不相同的问题 [#60701](https://github.com/pingcap/tidb/issues/60701) @[hawkingrei](https://github.com/hawkingrei) + - (dup): release-8.5.3.md > 错误修复> TiDB - 修复禁用 MDL 后，DDL 更新 schema 版本失败后卡住的问题 [#61210](https://github.com/pingcap/tidb/issues/61210) @[wjhuang2016](https://github.com/wjhuang2016) + - (dup): release-8.5.2.md > Bug fixes> TiDB - Fix the issue that enabling Redact log does not take effect in certain scenarios [#59279](https://github.com/pingcap/tidb/issues/59279) @[tangenta](https://github.com/tangenta) + - (dup): release-9.0.0.md > Bug fixes> TiDB - Fix the issue that a TiDB session might crash when Fix Control #44855 is enabled [#59762](https://github.com/pingcap/tidb/issues/59762) @[winoros](https://github.com/winoros) + - (dup): release-8.5.3.md > 错误修复> TiDB - 删除 IndexLookup 算子发生 context cancel 错误时没用的日志信息 [#61072](https://github.com/pingcap/tidb/issues/61072) @[yibin87](https://github.com/yibin87) + - (dup): release-8.5.2.md > Bug fixes> TiDB - Fix the issue that improper exception handling for statistics causes in-memory statistics to be mistakenly deleted when background tasks time out [#57901](https://github.com/pingcap/tidb/issues/57901) @[hawkingrei](https://github.com/hawkingrei) + - (dup): release-8.5.2.md > Bug fixes> TiDB - Fix the issue that executing `ADD UNIQUE INDEX` might cause data inconsistency [#60339](https://github.com/pingcap/tidb/issues/60339) @[tangenta](https://github.com/tangenta) + - (dup): release-8.5.3.md > 错误修复> TiDB - 修复统计信息系统表展示非 public 索引的问题 [#60430](https://github.com/pingcap/tidb/issues/60430) @[tangenta](https://github.com/tangenta) + - (dup): release-8.5.3.md > 错误修复> TiDB - 修复 HashJoin 算子因为内存超限导致的 goroutine leak 问题 [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) + ++ TiKV + + - note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - (dup): release-8.5.3.md > 错误修复> TiKV - 修复 TiKV 可能使用客户端无法解码的压缩算法的问题 [#18079](https://github.com/tikv/tikv/issues/18079) @[ekexium](https://github.com/ekexium) + - (dup): release-8.5.3.md > 错误修复> TiKV - 修复高并发场景下 TiKV 过量放行 SST 导入请求的问题 [#18452](https://github.com/tikv/tikv/issues/18452) @[hbisheng](https://github.com/hbisheng) + - (dup): release-8.3.0.md > Bug fixes> TiKV - Fix the issue that `Ingestion picked level` and `Compaction Job Size(files)` are displayed incorrectly in the TiKV dashboard in Grafana [#15990](https://github.com/tikv/tikv/issues/15990) @[Connor1996](https://github.com/Connor1996) + - (dup): release-9.0.0.md > Bug fixes> TiKV - Fix the issue that the unexpected `Server is busy` error occurs after TiKV restarts [#18233](https://github.com/tikv/tikv/issues/18233) @[LykxSassinator](https://github.com/LykxSassinator) + - (dup): release-6.5.9.md > Bug fixes> TiKV - Fix the issue that TiKV converts the time zone incorrectly for Brazil and Egypt [#16220](https://github.com/tikv/tikv/issues/16220) @[overvenus](https://github.com/overvenus) + - (dup): release-8.5.3.md > 错误修复> TiKV - 修复 slowlog 中 `StoreMsg` 的误导性日志问题 [#18561](https://github.com/tikv/tikv/issues/18561) @[LykxSassinator](https://github.com/LykxSassinator) + - (dup): release-9.0.0.md > Bug fixes> TiKV - Fix incorrect thread memory metrics [#18125](https://github.com/tikv/tikv/issues/18125) @[Connor1996](https://github.com/Connor1996) + ++ PD + + - note [#issue](https://github.com/tikv/pd/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/tikv/pd/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - (dup): release-8.5.2.md > Bug fixes> PD - Fix the issue that the default value of `lease` is not correctly set [#9156](https://github.com/tikv/pd/issues/9156) @[rleungx](https://github.com/rleungx) + - (dup): release-8.3.0.md > Bug fixes> PD - Fix the issue that the `split-merge-interval` configuration item might not take effect when you modify its value repeatedly (such as changing it from `1s` to `1h` and back to `1s`) [#8404](https://github.com/tikv/pd/issues/8404) @[lhy1024](https://github.com/lhy1024) + - (dup): release-8.5.3.md > 错误修复> PD - 修复了 TiDB Dashboard 导致的 goroutine 泄露问题 [#9402](https://github.com/tikv/pd/issues/9402) @[baurine](https://github.com/baurine) + ++ TiFlash + + - note [#issue](https://github.com/pingcap/tiflash/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/pingcap/tiflash/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - (dup): release-8.5.3.md > 错误修复> TiFlash - 修复创建 `((NULL))` 形式的表达式索引会导致 TiFlash panic 的问题 [#9891](https://github.com/pingcap/tiflash/issues/9891) @[JaySon-Huang](https://github.com/JaySon-Huang) + - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might panic when handling snapshots with irregular Region key-ranges [#10147](https://github.com/pingcap/tiflash/issues/10147) @[JaySon-Huang](https://github.com/JaySon-Huang) + - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might consume a large amount of memory when tables in a cluster contain a large number of `ENUM` type columns [#9947](https://github.com/pingcap/tiflash/issues/9947) @[JaySon-Huang](https://github.com/JaySon-Huang) + - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might fail to restart after inserting a single row of data larger than 16 MiB [#10052](https://github.com/pingcap/tiflash/issues/10052) @[JaySon-Huang](https://github.com/JaySon-Huang) + - (dup): release-8.5.3.md > 错误修复> TiFlash - 修复 resource control low token signal 丢失导致查询被限速的问题 [#10137](https://github.com/pingcap/tiflash/issues/10137) @[guo-shaoge](https://github.com/guo-shaoge) + - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might return the `Exception: Block schema mismatch` error when executing SQL statements containing `GROUP BY ... WITH ROLLUP` [#10110](https://github.com/pingcap/tiflash/issues/10110) @[gengliqi](https://github.com/gengliqi) + ++ Tools + + + Backup & Restore (BR) + + - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - (dup): release-8.5.2.md > Bug fixes> Tools> Backup & Restore (BR) - Fix the issue that PITR fails to restore indexes larger than 3072 bytes [#58430](https://github.com/pingcap/tidb/issues/58430) @[YuJuncen](https://github.com/YuJuncen) + - (dup): release-8.5.3.md > 错误修复> Tools> Backup & Restore (BR) - 修复了日志备份上传较大数据到 Azure Blob Storage 时会非常缓慢的问题。 [#18410](https://github.com/tikv/tikv/issues/18410) @[YuJuncen](https://github.com/YuJuncen) + + + TiCDC + + - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - (dup): release-8.5.2.md > Bug fixes> Tools> TiCDC - Fix the issue that the changefeed might get stuck after the replication traffic exceeds the traffic threshold of the downstream Kafka [#12110](https://github.com/pingcap/tiflow/issues/12110) @[3AceShowHand](https://github.com/3AceShowHand) + - (dup): release-6.5.12.md > Bug fixes> Tools> TiCDC - Fix the issue that using the `--overwrite-checkpoint-ts` parameter in the `changefeed pause` command might cause the changefeed to be stuck [#12055](https://github.com/pingcap/tiflow/issues/12055) @[hongyunyan](https://github.com/hongyunyan) + + + TiDB Data Migration (DM) + + - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + + + TiDB Lightning + + - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - (dup): release-8.5.2.md > Bug fixes> Tools> TiDB Lightning - Fix the issue that TiDB Lightning can get stuck for several hours when importing Parquet files from cloud storage into TiDB [#60224](https://github.com/pingcap/tidb/issues/60224) @[joechenrh](https://github.com/joechenrh) + - (dup): release-8.5.3.md > 错误修复> Tools> TiDB Lightning - 修复 lightning 向 TiKV 发起的 RPC 请求超时后返回 context deadline 的问题 [#61326](https://github.com/pingcap/tidb/issues/61326) @[OliverS929](https://github.com/OliverS929) + + + Dumpling + + - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + + + TiUP + + - note [#issue](https://github.com/pingcap/tiup/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - note [#issue](https://github.com/pingcap/tiup/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + + + NG Monitoring + + - (dup): release-8.5.2.md > Bug fixes> Tools> NG Monitoring - Fix the issue that TSDB consumes too much memory under high cardinality of time series data, and provide a memory configuration option for TSDB [#295](https://github.com/pingcap/ng-monitoring/issues/295) @[mornyx](https://github.com/mornyx) From e37fb99af575977153a5c75e189c777e1c3372e7 Mon Sep 17 00:00:00 2001 From: Aolin Date: Fri, 25 Jul 2025 14:54:31 +0800 Subject: [PATCH 02/27] add TiFlash Co-authored-by: JaySon --- releases/release-7.5.7.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index d7e07d4cb87d2..092ceb14dcc43 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -141,7 +141,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + TiFlash - note [#issue](https://github.com/pingcap/tiflash/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/pingcap/tiflash/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - Fix the panic issue caused by accidental deletion of SST files during running `IMPORT INTO` or `BR restore` [#10141](https://github.com/pingcap/tiflash/issues/10141) @[CalvinNeo](https://github.com/CalvinNeo) - (dup): release-8.5.3.md > 错误修复> TiFlash - 修复创建 `((NULL))` 形式的表达式索引会导致 TiFlash panic 的问题 [#9891](https://github.com/pingcap/tiflash/issues/9891) @[JaySon-Huang](https://github.com/JaySon-Huang) - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might panic when handling snapshots with irregular Region key-ranges [#10147](https://github.com/pingcap/tiflash/issues/10147) @[JaySon-Huang](https://github.com/JaySon-Huang) - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might consume a large amount of memory when tables in a cluster contain a large number of `ENUM` type columns [#9947](https://github.com/pingcap/tiflash/issues/9947) @[JaySon-Huang](https://github.com/JaySon-Huang) From a98f6915f10da80f37dfae7ccf8c7e3a4552d97d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E7=AB=A5=E5=89=91?= <1045931706@qq.com> Date: Fri, 25 Jul 2025 16:38:54 +0800 Subject: [PATCH 03/27] pd release MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: 童剑 <1045931706@qq.com> --- releases/release-7.5.7.md | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 092ceb14dcc43..4e9052f813a54 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -44,10 +44,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + PD - - note [#issue](https://github.com/tikv/pd/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/tikv/pd/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - (dup): release-8.5.3.md > 改进提升> PD - 优化了 balance region 调度器的算分公式 [#9145](https://github.com/tikv/pd/issues/9145) @[bufferflies](https://github.com/bufferflies) - - (dup): release-8.5.3.md > 改进提升> PD - 增加了 GO Runtime 相关监控 [#8931](https://github.com/tikv/pd/issues/8931) @[bufferflies](https://github.com/bufferflies) + - Add more metrics for Golang Runtime, details can be seen at the runtime panel [#8931](https://github.com/tikv/pd/issues/8931) @[bufferflies](https://github.com/bufferflies) + TiFlash @@ -132,11 +129,12 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + PD - - note [#issue](https://github.com/tikv/pd/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/tikv/pd/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - (dup): release-8.5.2.md > Bug fixes> PD - Fix the issue that the default value of `lease` is not correctly set [#9156](https://github.com/tikv/pd/issues/9156) @[rleungx](https://github.com/rleungx) - - (dup): release-8.3.0.md > Bug fixes> PD - Fix the issue that the `split-merge-interval` configuration item might not take effect when you modify its value repeatedly (such as changing it from `1s` to `1h` and back to `1s`) [#8404](https://github.com/tikv/pd/issues/8404) @[lhy1024](https://github.com/lhy1024) - - (dup): release-8.5.3.md > 错误修复> PD - 修复了 TiDB Dashboard 导致的 goroutine 泄露问题 [#9402](https://github.com/tikv/pd/issues/9402) @[baurine](https://github.com/baurine) + + - Fix the issue that the default value of `lease` is not correctly set [#9156](https://github.com/tikv/pd/issues/9156) @[rleungx](https://github.com/rleungx) + - Fix the issue that the `split-merge-interval` configuration item might not take effect when you modify its value repeatedly (such as changing it from `1s` to `1h` and back to `1s`) [#8404](https://github.com/tikv/pd/issues/8404) @[lhy1024](https://github.com/lhy1024) + - Fix the issue that pd goroutine leak due to the dashboard connections don't close well [#9402](https://github.com/tikv/pd/issues/9402) @[baurine](https://github.com/baurine) + - Fix the issue that the new store cna't be balanced [#9145](https://github.com/tikv/pd/issues/9145) @[bufferflies](https://github.com/bufferflies) + - Fix the issue that client can't get any tso after enabled the variable `tidb_enable_tso_follower_proxy`[#9188](https://github.com/tikv/pd/issues/9188) @[Tema](https://github.com/Tema) + TiFlash From 15defb5c22c7c916881526f1216b6818d67bf4d7 Mon Sep 17 00:00:00 2001 From: Aolin Date: Fri, 8 Aug 2025 16:46:39 +0800 Subject: [PATCH 04/27] add TiCDC Co-authored-by: lidezhu <47731263+lidezhu@users.noreply.github.com> --- releases/release-7.5.7.md | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 4e9052f813a54..27c2013005358 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -158,10 +158,9 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + TiCDC - - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - Fix a bug that may cause changefeed with storage sink getting stuck [#9162](https://github.com/pingcap/tiflow/issues/9162) @[asddongmen](https://github.com/asddongmen) - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - (dup): release-8.5.2.md > Bug fixes> Tools> TiCDC - Fix the issue that the changefeed might get stuck after the replication traffic exceeds the traffic threshold of the downstream Kafka [#12110](https://github.com/pingcap/tiflow/issues/12110) @[3AceShowHand](https://github.com/3AceShowHand) - - (dup): release-6.5.12.md > Bug fixes> Tools> TiCDC - Fix the issue that using the `--overwrite-checkpoint-ts` parameter in the `changefeed pause` command might cause the changefeed to be stuck [#12055](https://github.com/pingcap/tiflow/issues/12055) @[hongyunyan](https://github.com/hongyunyan) + TiDB Data Migration (DM) From a170834212ae60f4b4a7b9cf5d3e87198db54f32 Mon Sep 17 00:00:00 2001 From: Aolin Date: Wed, 13 Aug 2025 16:46:09 +0800 Subject: [PATCH 05/27] update dup notes for v8.5.3 --- releases/release-7.5.7.md | 66 +++++++++++++++++++-------------------- 1 file changed, 33 insertions(+), 33 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 27c2013005358..b3311edd10740 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -21,25 +21,25 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - (dup): release-8.5.3.md > 改进提升> TiDB - 新增导入期间分裂 region 和 ingest 数据的流控接口 [#61553](https://github.com/pingcap/tidb/issues/61553) @[tangenta](https://github.com/tangenta) + - (dup): release-8.5.3.md > Improvements> TiDB - Add flow control interfaces for Region splitting and data ingestion during data import [#61553](https://github.com/pingcap/tidb/issues/61553) @[tangenta](https://github.com/tangenta) - (dup): release-8.2.0.md > Improvements> TiDB - Optimize the performance of obtaining data distribution information when performing simple queries on tables with large data volumes [#53850](https://github.com/pingcap/tidb/issues/53850) @[you06](https://github.com/you06) - - (dup): release-8.5.3.md > 改进提升> TiDB - 新增加索引的导入速度监控 [#60925](https://github.com/pingcap/tidb/issues/60925) @[CbcWestwolf](https://github.com/CbcWestwolf) + - (dup): release-8.5.3.md > Improvements> TiDB - Add a monitoring metric to observe the write speed to TiKV during index addition [#60925](https://github.com/pingcap/tidb/issues/60925) @[CbcWestwolf](https://github.com/CbcWestwolf) + TiKV - note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - (dup): release-8.5.3.md > 改进提升> TiKV - 优化 raftstore 中 `CompactedEvent` 的处理逻辑，将其移至 `split-check` worker 执行 [#18532](https://github.com/tikv/tikv/issues/18532) @[LykxSassinator](https://github.com/LykxSassinator) + - (dup): release-8.5.3.md > Improvements> TiKV - Optimize the handling of `CompactedEvent` in Raftstore by moving it to the `split-check` worker, reducing blocking on the main Raftstore thread [#18532](https://github.com/tikv/tikv/issues/18532) @[LykxSassinator](https://github.com/LykxSassinator) - (dup): release-8.1.0.md > Improvements> TiKV - Add metrics for memory usage per thread [#15927](https://github.com/tikv/tikv/issues/15927) @[Connor1996](https://github.com/Connor1996) - - (dup): release-8.5.3.md > 改进提升> TiKV - 移除 “sst ingest is too slow” 的日志，避免引发性能抖动 [#18549](https://github.com/tikv/tikv/issues/18549) @[LykxSassinator](https://github.com/LykxSassinator) + - (dup): release-8.5.3.md > Improvements> TiKV - Log only `SST ingest is experiencing slowdowns` when SST ingest is too slow, and skip calling `get_sst_key_ranges` to avoid performance jitter [#18549](https://github.com/tikv/tikv/issues/18549) @[LykxSassinator](https://github.com/LykxSassinator) - (dup): release-7.1.6.md > Improvements> TiKV - Optimize the jittery access delay when restarting TiKV due to waiting for the log to be applied, improving the stability of TiKV [#15874](https://github.com/tikv/tikv/issues/15874) @[LykxSassinator](https://github.com/LykxSassinator) - - (dup): release-8.5.3.md > 改进提升> TiKV - (dup): release-9.0.0.md > 改进提升> TiKV - 优化残留数据清理机制，减少对请求延迟的影响 [#18107](https://github.com/tikv/tikv/issues/18107) @[LykxSassinator](https://github.com/LykxSassinator) - - (dup): release-8.5.3.md > 改进提升> TiKV - 修复 TiKV 正常退出时未能中止正在进行的手动 Compaction 任务的问题 [#18396](https://github.com/tikv/tikv/issues/18396) @[LykxSassinator](https://github.com/LykxSassinator) - - (dup): release-8.5.3.md > 改进提升> TiKV - 优化 Raft-Engine 中 `fetch_entries_to` 的性能，减少竞争，提升混合负载下的执行性能 [#18605](https://github.com/tikv/tikv/issues/18605) @[LykxSassinator](https://github.com/LykxSassinator) + - (dup): release-8.5.3.md > Improvements> TiKV - Optimize the cleanup mechanism of residual data to mitigate the impact on request latency [#18107](https://github.com/tikv/tikv/issues/18107) @[LykxSassinator](https://github.com/LykxSassinator) + - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix the issue that TiKV fails to terminate ongoing manual compaction tasks during graceful shutdown [#18396](https://github.com/tikv/tikv/issues/18396) @[LykxSassinator](https://github.com/LykxSassinator) + - (dup): release-8.5.3.md > Improvements> TiKV - Optimize the performance of `fetch_entries_to` in Raft Engine to reduce contention and improve performance under mixed workloads [#18605](https://github.com/tikv/tikv/issues/18605) @[LykxSassinator](https://github.com/LykxSassinator) - (dup): release-8.4.0.md > Improvements> TiKV - Support dynamically modifying flow-control configurations for write operations [#17395](https://github.com/tikv/tikv/issues/17395) @[glorv](https://github.com/glorv) - - (dup): release-8.5.3.md > 改进提升> TiKV - 支持在不阻塞前台写入的情况下导入 SST 文件，降低延迟影响 [#18081](https://github.com/tikv/tikv/issues/18081) @[hhwyt](https://github.com/hhwyt) - - (dup): release-8.5.3.md > 改进提升> TiKV - 支持在不阻塞前台写入的情况下导入 SST 文件，降低延迟影响 [#18081](https://github.com/tikv/tikv/issues/18081) @[hhwyt](https://github.com/hhwyt) - - (dup): release-8.5.3.md > 改进提升> TiKV - 改进分盘部署场景下 kvdb 磁盘 I/O 抖动的检测机制 [#18463](https://github.com/tikv/tikv/issues/18463) @[LykxSassinator](https://github.com/LykxSassinator) + - (dup): release-8.5.3.md > Improvements> TiKV - Support ingesting SST files without blocking foreground writes, reducing the impact of latency [#18081](https://github.com/tikv/tikv/issues/18081) @[hhwyt](https://github.com/hhwyt) + - (dup): release-8.5.3.md > Improvements> TiKV - Support ingesting SST files without blocking foreground writes, reducing the impact of latency [#18081](https://github.com/tikv/tikv/issues/18081) @[hhwyt](https://github.com/hhwyt) + - (dup): release-8.5.3.md > Improvements> TiKV - Optimize the detection mechanism for I/O jitter on KvDB disks when KvDB and RaftDB use separate mount paths [#18463](https://github.com/tikv/tikv/issues/18463) @[LykxSassinator](https://github.com/LykxSassinator) - (dup): release-6.5.9.md > Improvements> TiKV - Add slow logs for peer and store messages [#16600](https://github.com/tikv/tikv/issues/16600) @[Connor1996](https://github.com/Connor1996) + PD @@ -50,8 +50,8 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - note [#issue](https://github.com/pingcap/tiflash/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - note [#issue](https://github.com/pingcap/tiflash/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - (dup): release-8.5.3.md > 改进提升> TiFlash - 增强 TiFlash 在宽表场景下 OOM 风险相关的监测指标 [#10272](https://github.com/pingcap/tiflash/issues/10272) @[JaySon-Huang](https://github.com/JaySon-Huang) - - (dup): release-8.5.3.md > 改进提升> TiFlash - 增加 TiFlash 获取存储层快照重试次数来增强大表上查询的稳定性 [#10300](https://github.com/pingcap/tiflash/issues/10300) @[JaySon-Huang](https://github.com/JaySon-Huang) + - (dup): release-8.5.3.md > Improvements> TiFlash - Enhance the observability for TiFlash OOM risks in wide table scenarios [#10272](https://github.com/pingcap/tiflash/issues/10272) @[JaySon-Huang](https://github.com/JaySon-Huang) + - (dup): release-8.5.3.md > Improvements> TiFlash - Increase the maximum retry count when acquiring storage snapshots to improve query stability for large tables [#10300](https://github.com/pingcap/tiflash/issues/10300) @[JaySon-Huang](https://github.com/JaySon-Huang) - (dup): release-8.1.0.md > Improvements> TiFlash - Mitigate the issue that TiFlash might panic due to updating certificates after TLS is enabled [#8535](https://github.com/pingcap/tiflash/issues/8535) @[windtalker](https://github.com/windtalker) + Tools @@ -60,16 +60,16 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - (dup): release-8.5.3.md > 改进提升> Tools> Backup & Restore (BR) - 如今即便指定了 `-f` 来过滤表，BR 也会对集群内是否存在表进行检查 [#61592](https://github.com/pingcap/tidb/issues/61592) @[RidRisR](https://github.com/RidRisR) - - (dup): release-8.5.3.md > 改进提升> Tools> Backup & Restore (BR) - 如今，TiKV 的 Download API 支持裁切掉 SST 中某段时间的数据 [#18399](https://github.com/tikv/tikv/issues/18399) @[3pointer](https://github.com/3pointer) + - (dup): release-8.5.3.md > Bug fixes> Tools> Backup & Restore (BR) - Fix the issue that BR does not check whether the corresponding table exists in the cluster when filtering tables with `-f` [#61592](https://github.com/pingcap/tidb/issues/61592) @[RidRisR](https://github.com/RidRisR) + - (dup): release-8.5.3.md > Improvements> Tools> Backup & Restore (BR) - The Download API of TiKV supports filtering out data within a certain time range when downloading backup files, which avoids importing outdated or future data versions during restore [#18399](https://github.com/tikv/tikv/issues/18399) @[3pointer](https://github.com/3pointer) + TiCDC - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - (dup): release-8.5.3.md > 改进提升> Tools> TiCDC - 修复在包含虚拟列的表中计算事件过滤表达式时出现的 Panic 错误 [#12206](https://github.com/pingcap/tiflow/issues/12206) @[lidezhu](https://github.com/lidezhu) - - (dup): release-8.5.3.md > 改进提升> Tools> TiCDC - 修复 dispatcher 配置中列名/索引名大小写敏感匹配的问题 [#12103](https://github.com/pingcap/tiflow/issues/12103) @[wk989898](https://github.com/wk989898) - - (dup): release-8.5.3.md > 改进提升> Tools> TiCDC - 修复在相同 IP 地址上扩缩容 TiKV 节点后，因使用过期的 store ID 导致 resolved ts 延迟持续上升的问题 [#12162](https://github.com/pingcap/tiflow/issues/12162) @[3AceShowHand](https://github.com/3AceShowHand) + - (dup): release-8.5.3.md > Bug fixes> Tools> TiCDC - Fix the issue that evaluating event filter expressions on tables containing virtual columns might cause a panic [#12206](https://github.com/pingcap/tiflow/issues/12206) @[lidezhu](https://github.com/lidezhu) + - (dup): release-8.5.3.md > Bug fixes> Tools> TiCDC - Fix the issue of case-sensitive matching for column and index names in the dispatcher configuration [#12103](https://github.com/pingcap/tiflow/issues/12103) @[wk989898](https://github.com/wk989898) + - (dup): release-8.5.3.md > Bug fixes> Tools> TiCDC - Fix the issue that the resolved ts lag keeps increasing after scaling in or out TiKV nodes on the same IP address because of outdated store IDs [#12162](https://github.com/pingcap/tiflow/issues/12162) @[3AceShowHand](https://github.com/3AceShowHand) + TiDB Data Migration (DM) @@ -97,34 +97,34 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - (dup): release-8.5.3.md > 错误修复> TiDB - 修复 IndexMerge/IndexLookUp 算子下发查询时共享 kv request 导致的 data race [#60175](https://github.com/pingcap/tidb/issues/60175) @[you06](https://github.com/you06) + - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that shared KV requests in `IndexMerge` and `IndexLookUp` operators cause data races when pushing down queries [#60175](https://github.com/pingcap/tidb/issues/60175) @[you06](https://github.com/you06) - (dup): release-9.0.0.md > Bug fixes> TiDB - Fix a potential goroutine leak issue in the Hash Aggregation operator [#58004](https://github.com/pingcap/tidb/issues/58004) @[xzhangxian1008](https://github.com/xzhangxian1008) - (dup): release-7.6.0.md > Bug fixes> TiDB - Fix the issue that MPP plans might not be selected when indexes on generated columns are set as visible [#47766](https://github.com/pingcap/tidb/issues/47766) @[AilinKid](https://github.com/AilinKid) - - (dup): release-8.5.3.md > 错误修复> TiDB - 为包含 `_charset(xxx), _charset(xxx2), ...` 的 SQL 生成同样的 digest [#58447](https://github.com/pingcap/tidb/issues/58447) @[xhebox](https://github.com/xhebox) - - (dup): release-8.5.3.md > 错误修复> TiDB - 修复频繁合并 region 导致 TTL 任务无法启动的问题 [#61512](https://github.com/pingcap/tidb/issues/61512) @[YangKeao](https://github.com/YangKeao) - - (dup): release-8.5.3.md > 错误修复> TiDB - 修复执行有损 DDL 后，查询 TiFlash 数据不一致的问题 [#61455](https://github.com/pingcap/tidb/issues/61455) @[Lloyd-Pottiger](https://github.com/Lloyd-Pottiger) - - (dup): release-8.5.3.md > 错误修复> TiDB - 修复了 `ALTER RANGE meta SET PLACEMENT POLICY` key 范围错误的问题 [#60888](https://github.com/pingcap/tidb/issues/60888) @[nolouch](https://github.com/nolouch) + - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that SQL statements containing `_charset(xxx), _charset(xxx2), ...` generate different digests [#58447](https://github.com/pingcap/tidb/issues/58447) @[xhebox](https://github.com/xhebox) + - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that frequent Region merges prevent TTL jobs from starting [#61512](https://github.com/pingcap/tidb/issues/61512) @[YangKeao](https://github.com/YangKeao) + - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that TiFlash query results are inconsistent after executing a lossy DDL statement [#61455](https://github.com/pingcap/tidb/issues/61455) @[Lloyd-Pottiger](https://github.com/Lloyd-Pottiger) + - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue of incorrect key range in `ALTER RANGE meta SET PLACEMENT POLICY` [#60888](https://github.com/pingcap/tidb/issues/60888) @[nolouch](https://github.com/nolouch) - (dup): release-8.5.2.md > Bug fixes> TiDB - Fix the issue that the data in the **Stats Healthy Distribution** panel of Grafana might be incorrect [#57176](https://github.com/pingcap/tidb/issues/57176) @[hawkingrei](https://github.com/hawkingrei) - - (dup): release-8.5.3.md > 错误修复> TiDB - 修复 latin1_bin 与 utf8mb4_bin, utf8_bin 的比较方式不相同的问题 [#60701](https://github.com/pingcap/tidb/issues/60701) @[hawkingrei](https://github.com/hawkingrei) - - (dup): release-8.5.3.md > 错误修复> TiDB - 修复禁用 MDL 后，DDL 更新 schema 版本失败后卡住的问题 [#61210](https://github.com/pingcap/tidb/issues/61210) @[wjhuang2016](https://github.com/wjhuang2016) + - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that the comparison behavior of `latin1_bin` differs from that of `utf8mb4_bin` and `utf8_bin` [#60701](https://github.com/pingcap/tidb/issues/60701) @[hawkingrei](https://github.com/hawkingrei) + - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that after disabling metadata locking (MDL), DDL operations get stuck after failing to update the schema version [#61210](https://github.com/pingcap/tidb/issues/61210) @[wjhuang2016](https://github.com/wjhuang2016) - (dup): release-8.5.2.md > Bug fixes> TiDB - Fix the issue that enabling Redact log does not take effect in certain scenarios [#59279](https://github.com/pingcap/tidb/issues/59279) @[tangenta](https://github.com/tangenta) - (dup): release-9.0.0.md > Bug fixes> TiDB - Fix the issue that a TiDB session might crash when Fix Control #44855 is enabled [#59762](https://github.com/pingcap/tidb/issues/59762) @[winoros](https://github.com/winoros) - - (dup): release-8.5.3.md > 错误修复> TiDB - 删除 IndexLookup 算子发生 context cancel 错误时没用的日志信息 [#61072](https://github.com/pingcap/tidb/issues/61072) @[yibin87](https://github.com/yibin87) + - (dup): release-8.5.3.md > Improvements> TiDB - Remove redundant log entries when the `IndexLookup` operator encounters a `context canceled` error [#61072](https://github.com/pingcap/tidb/issues/61072) @[yibin87](https://github.com/yibin87) - (dup): release-8.5.2.md > Bug fixes> TiDB - Fix the issue that improper exception handling for statistics causes in-memory statistics to be mistakenly deleted when background tasks time out [#57901](https://github.com/pingcap/tidb/issues/57901) @[hawkingrei](https://github.com/hawkingrei) - (dup): release-8.5.2.md > Bug fixes> TiDB - Fix the issue that executing `ADD UNIQUE INDEX` might cause data inconsistency [#60339](https://github.com/pingcap/tidb/issues/60339) @[tangenta](https://github.com/tangenta) - - (dup): release-8.5.3.md > 错误修复> TiDB - 修复统计信息系统表展示非 public 索引的问题 [#60430](https://github.com/pingcap/tidb/issues/60430) @[tangenta](https://github.com/tangenta) - - (dup): release-8.5.3.md > 错误修复> TiDB - 修复 HashJoin 算子因为内存超限导致的 goroutine leak 问题 [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) + - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that non-public indexes are shown in the statistics system table [#60430](https://github.com/pingcap/tidb/issues/60430) @[tangenta](https://github.com/tangenta) + - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that the HashJoin operator causes Goroutine leaks due to memory overuse [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) + TiKV - note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - (dup): release-8.5.3.md > 错误修复> TiKV - 修复 TiKV 可能使用客户端无法解码的压缩算法的问题 [#18079](https://github.com/tikv/tikv/issues/18079) @[ekexium](https://github.com/ekexium) - - (dup): release-8.5.3.md > 错误修复> TiKV - 修复高并发场景下 TiKV 过量放行 SST 导入请求的问题 [#18452](https://github.com/tikv/tikv/issues/18452) @[hbisheng](https://github.com/hbisheng) + - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix the issue that TiKV might use a compression algorithm that the client cannot decode [#18079](https://github.com/tikv/tikv/issues/18079) @[ekexium](https://github.com/ekexium) + - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix the issue that TiKV allows excessive SST ingest requests under high concurrency [#18452](https://github.com/tikv/tikv/issues/18452) @[hbisheng](https://github.com/hbisheng) - (dup): release-8.3.0.md > Bug fixes> TiKV - Fix the issue that `Ingestion picked level` and `Compaction Job Size(files)` are displayed incorrectly in the TiKV dashboard in Grafana [#15990](https://github.com/tikv/tikv/issues/15990) @[Connor1996](https://github.com/Connor1996) - (dup): release-9.0.0.md > Bug fixes> TiKV - Fix the issue that the unexpected `Server is busy` error occurs after TiKV restarts [#18233](https://github.com/tikv/tikv/issues/18233) @[LykxSassinator](https://github.com/LykxSassinator) - (dup): release-6.5.9.md > Bug fixes> TiKV - Fix the issue that TiKV converts the time zone incorrectly for Brazil and Egypt [#16220](https://github.com/tikv/tikv/issues/16220) @[overvenus](https://github.com/overvenus) - - (dup): release-8.5.3.md > 错误修复> TiKV - 修复 slowlog 中 `StoreMsg` 的误导性日志问题 [#18561](https://github.com/tikv/tikv/issues/18561) @[LykxSassinator](https://github.com/LykxSassinator) + - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix misleading descriptions in `StoreMsg` log entries in slow logs [#18561](https://github.com/tikv/tikv/issues/18561) @[LykxSassinator](https://github.com/LykxSassinator) - (dup): release-9.0.0.md > Bug fixes> TiKV - Fix incorrect thread memory metrics [#18125](https://github.com/tikv/tikv/issues/18125) @[Connor1996](https://github.com/Connor1996) + PD @@ -140,11 +140,11 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - note [#issue](https://github.com/pingcap/tiflash/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - Fix the panic issue caused by accidental deletion of SST files during running `IMPORT INTO` or `BR restore` [#10141](https://github.com/pingcap/tiflash/issues/10141) @[CalvinNeo](https://github.com/CalvinNeo) - - (dup): release-8.5.3.md > 错误修复> TiFlash - 修复创建 `((NULL))` 形式的表达式索引会导致 TiFlash panic 的问题 [#9891](https://github.com/pingcap/tiflash/issues/9891) @[JaySon-Huang](https://github.com/JaySon-Huang) + - (dup): release-8.5.3.md > Bug fixes> TiFlash - Fix the issue that creating an expression index in the form of `((NULL))` causes TiFlash to panic [#9891](https://github.com/pingcap/tiflash/issues/9891) @[JaySon-Huang](https://github.com/JaySon-Huang) - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might panic when handling snapshots with irregular Region key-ranges [#10147](https://github.com/pingcap/tiflash/issues/10147) @[JaySon-Huang](https://github.com/JaySon-Huang) - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might consume a large amount of memory when tables in a cluster contain a large number of `ENUM` type columns [#9947](https://github.com/pingcap/tiflash/issues/9947) @[JaySon-Huang](https://github.com/JaySon-Huang) - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might fail to restart after inserting a single row of data larger than 16 MiB [#10052](https://github.com/pingcap/tiflash/issues/10052) @[JaySon-Huang](https://github.com/JaySon-Huang) - - (dup): release-8.5.3.md > 错误修复> TiFlash - 修复 resource control low token signal 丢失导致查询被限速的问题 [#10137](https://github.com/pingcap/tiflash/issues/10137) @[guo-shaoge](https://github.com/guo-shaoge) + - (dup): release-8.5.3.md > Bug fixes> TiFlash - Fix the issue that missing resource control low token signals lead to query throttling [#10137](https://github.com/pingcap/tiflash/issues/10137) @[guo-shaoge](https://github.com/guo-shaoge) - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might return the `Exception: Block schema mismatch` error when executing SQL statements containing `GROUP BY ... WITH ROLLUP` [#10110](https://github.com/pingcap/tiflash/issues/10110) @[gengliqi](https://github.com/gengliqi) + Tools @@ -154,7 +154,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - (dup): release-8.5.2.md > Bug fixes> Tools> Backup & Restore (BR) - Fix the issue that PITR fails to restore indexes larger than 3072 bytes [#58430](https://github.com/pingcap/tidb/issues/58430) @[YuJuncen](https://github.com/YuJuncen) - - (dup): release-8.5.3.md > 错误修复> Tools> Backup & Restore (BR) - 修复了日志备份上传较大数据到 Azure Blob Storage 时会非常缓慢的问题。 [#18410](https://github.com/tikv/tikv/issues/18410) @[YuJuncen](https://github.com/YuJuncen) + - (dup): release-8.5.3.md > Bug fixes> Tools> Backup & Restore (BR) - Fix the issue that log backup uploads to Azure Blob Storage are slow when transferring large volumes of data [#18410](https://github.com/tikv/tikv/issues/18410) @[YuJuncen](https://github.com/YuJuncen) + TiCDC From ee6c3bc6a3e82f8a7520a1f9b7126e3737b000c2 Mon Sep 17 00:00:00 2001 From: Aolin Date: Wed, 13 Aug 2025 17:04:12 +0800 Subject: [PATCH 06/27] update --- releases/release-7.5.7.md | 85 ++++++++++++++++++++++++++++----------- 1 file changed, 62 insertions(+), 23 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index b3311edd10740..8c46733faf666 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -13,28 +13,37 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- ## Compatibility changes -- note [#issue](https://github.com/pingcap/${repo-name}/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + + +- 将系统变量 `tidb_enable_historical_stats` 的默认值从 `ON` 修改为 `OFF`，即默认关闭历史统计信息，避免潜在的稳定性问题 [#53048](https://github.com/pingcap/tidb/issues/53048) @[hawkingrei](https://github.com/hawkingrei) ## Improvements -+ TiDB ++ TiDB - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - (dup): release-8.5.3.md > Improvements> TiDB - Add flow control interfaces for Region splitting and data ingestion during data import [#61553](https://github.com/pingcap/tidb/issues/61553) @[tangenta](https://github.com/tangenta) - (dup): release-8.2.0.md > Improvements> TiDB - Optimize the performance of obtaining data distribution information when performing simple queries on tables with large data volumes [#53850](https://github.com/pingcap/tidb/issues/53850) @[you06](https://github.com/you06) - (dup): release-8.5.3.md > Improvements> TiDB - Add a monitoring metric to observe the write speed to TiKV during index addition [#60925](https://github.com/pingcap/tidb/issues/60925) @[CbcWestwolf](https://github.com/CbcWestwolf) + - 优化了 DML 在 DDL 执行期间的加锁逻辑，减少了 DML 和 DDL 操作的锁冲突，提高了某些场景下 DDL 的性能。但是由于在此过程中也会引入额外的二级索引加锁操作，可能会造成 DML 性能轻微下降 [#62337](https://github.com/pingcap/tidb/issues/62337) @[lcwangchao](https://github.com/lcwangchao) + - 调整 `tidb_opt_ordering_index_selectivity_threshold` 值为 1 时的行为，增强变量的控制能力 [#60242](https://github.com/pingcap/tidb/issues/60242) @[time-and-fate](https://github.com/time-and-fate) + - 避免 ANALYZE 执行完成后需要刷新整个集群的统计信息，从而导致 ANALYZE 执行时间过长的情况 [#57631](https://github.com/pingcap/tidb/issues/57631) @[0xPoe](https://github.com/0xPoe) + - 常量折叠可以将带有 NOT NULL 约束的列上进行的 IS NULL 计算折叠为 FALSE [#62050](https://github.com/pingcap/tidb/issues/62050) @[hawkingrei](https://github.com/hawkingrei) + - 优化器支持更多 JOIN 的常量传播 [#51700](https://github.com/pingcap/tidb/issues/51700) @[hawkingrei](https://github.com/hawkingrei) + - 优化在 DML 与 DDL 存在较多锁冲突时，合并 temp index 的性能 [#61433](https://github.com/pingcap/tidb/issues/61433) @[tangenta](https://github.com/tangenta) -+ TiKV ++ TiKV - note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - 优化 TiKV compaction 触发逻辑，按回收效率排序对所有数据段依序处理，降低 MVCC 冗余数据对性能的影响 [#18571](https://github.com/tikv/tikv/issues/18571) @[v01dstar](https://github.com/v01dstar) + - 优化 async snapshot 和 write 在有大量 SST 文件的环境中的尾延迟 [#18743](https://github.com/tikv/tikv/issues/18743) @[Connor1996](https://github.com/Connor1996) + - (dup): release-8.1.2.md > Improvements> TiKV - Improve the speed of Region Merge in scenarios with empty tables and small Regions [#17376](https://github.com/tikv/tikv/issues/17376) @[LykxSassinator](https://github.com/LykxSassinator) - (dup): release-8.5.3.md > Improvements> TiKV - Optimize the handling of `CompactedEvent` in Raftstore by moving it to the `split-check` worker, reducing blocking on the main Raftstore thread [#18532](https://github.com/tikv/tikv/issues/18532) @[LykxSassinator](https://github.com/LykxSassinator) - (dup): release-8.1.0.md > Improvements> TiKV - Add metrics for memory usage per thread [#15927](https://github.com/tikv/tikv/issues/15927) @[Connor1996](https://github.com/Connor1996) - (dup): release-8.5.3.md > Improvements> TiKV - Log only `SST ingest is experiencing slowdowns` when SST ingest is too slow, and skip calling `get_sst_key_ranges` to avoid performance jitter [#18549](https://github.com/tikv/tikv/issues/18549) @[LykxSassinator](https://github.com/LykxSassinator) - (dup): release-7.1.6.md > Improvements> TiKV - Optimize the jittery access delay when restarting TiKV due to waiting for the log to be applied, improving the stability of TiKV [#15874](https://github.com/tikv/tikv/issues/15874) @[LykxSassinator](https://github.com/LykxSassinator) - (dup): release-8.5.3.md > Improvements> TiKV - Optimize the cleanup mechanism of residual data to mitigate the impact on request latency [#18107](https://github.com/tikv/tikv/issues/18107) @[LykxSassinator](https://github.com/LykxSassinator) - - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix the issue that TiKV fails to terminate ongoing manual compaction tasks during graceful shutdown [#18396](https://github.com/tikv/tikv/issues/18396) @[LykxSassinator](https://github.com/LykxSassinator) - (dup): release-8.5.3.md > Improvements> TiKV - Optimize the performance of `fetch_entries_to` in Raft Engine to reduce contention and improve performance under mixed workloads [#18605](https://github.com/tikv/tikv/issues/18605) @[LykxSassinator](https://github.com/LykxSassinator) - (dup): release-8.4.0.md > Improvements> TiKV - Support dynamically modifying flow-control configurations for write operations [#17395](https://github.com/tikv/tikv/issues/17395) @[glorv](https://github.com/glorv) - (dup): release-8.5.3.md > Improvements> TiKV - Support ingesting SST files without blocking foreground writes, reducing the impact of latency [#18081](https://github.com/tikv/tikv/issues/18081) @[hhwyt](https://github.com/hhwyt) @@ -42,9 +51,10 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - (dup): release-8.5.3.md > Improvements> TiKV - Optimize the detection mechanism for I/O jitter on KvDB disks when KvDB and RaftDB use separate mount paths [#18463](https://github.com/tikv/tikv/issues/18463) @[LykxSassinator](https://github.com/LykxSassinator) - (dup): release-6.5.9.md > Improvements> TiKV - Add slow logs for peer and store messages [#16600](https://github.com/tikv/tikv/issues/16600) @[Connor1996](https://github.com/Connor1996) -+ PD ++ PD - Add more metrics for Golang Runtime, details can be seen at the runtime panel [#8931](https://github.com/tikv/pd/issues/8931) @[bufferflies](https://github.com/bufferflies) + - 减少一些非必要 error 日志 [#9370](https://github.com/tikv/pd/issues/9370) @[bufferflies](https://github.com/bufferflies) + TiFlash @@ -56,20 +66,16 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + Tools - + Backup & Restore (BR) + + Backup & Restore (BR) - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - (dup): release-8.5.3.md > Bug fixes> Tools> Backup & Restore (BR) - Fix the issue that BR does not check whether the corresponding table exists in the cluster when filtering tables with `-f` [#61592](https://github.com/pingcap/tidb/issues/61592) @[RidRisR](https://github.com/RidRisR) + - 在 Amazon EC2 上部署 TiDB 时，BR 支持 AWS 的 Instance Metadata Service Version 2 (IMDSv2)。你可以在 EC2 实例上进行相关配置，使 BR 可以使用与实例关联的 IAM 角色以适当的权限访问 Amazon S3 [#16443](https://github.com/tikv/tikv/issues/16443) @[pingyu](https://github.com/pingyu) - (dup): release-8.5.3.md > Improvements> Tools> Backup & Restore (BR) - The Download API of TiKV supports filtering out data within a certain time range when downloading backup files, which avoids importing outdated or future data versions during restore [#18399](https://github.com/tikv/tikv/issues/18399) @[3pointer](https://github.com/3pointer) + TiCDC - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - (dup): release-8.5.3.md > Bug fixes> Tools> TiCDC - Fix the issue that evaluating event filter expressions on tables containing virtual columns might cause a panic [#12206](https://github.com/pingcap/tiflow/issues/12206) @[lidezhu](https://github.com/lidezhu) - - (dup): release-8.5.3.md > Bug fixes> Tools> TiCDC - Fix the issue of case-sensitive matching for column and index names in the dispatcher configuration [#12103](https://github.com/pingcap/tiflow/issues/12103) @[wk989898](https://github.com/wk989898) - - (dup): release-8.5.3.md > Bug fixes> Tools> TiCDC - Fix the issue that the resolved ts lag keeps increasing after scaling in or out TiKV nodes on the same IP address because of outdated store IDs [#12162](https://github.com/pingcap/tiflow/issues/12162) @[3AceShowHand](https://github.com/3AceShowHand) + TiDB Data Migration (DM) @@ -93,7 +99,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- ## Bug fixes -+ TiDB ++ TiDB - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) @@ -114,11 +120,36 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - (dup): release-8.5.2.md > Bug fixes> TiDB - Fix the issue that executing `ADD UNIQUE INDEX` might cause data inconsistency [#60339](https://github.com/pingcap/tidb/issues/60339) @[tangenta](https://github.com/tangenta) - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that non-public indexes are shown in the statistics system table [#60430](https://github.com/pingcap/tidb/issues/60430) @[tangenta](https://github.com/tangenta) - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that the HashJoin operator causes Goroutine leaks due to memory overuse [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) + - 修复 PhysicalExchangeSender.HashCol 浅拷贝导致的 TiFlash crash 或者结果错误的问题 [#60517](https://github.com/pingcap/tidb/issues/60517) @[windtalker](https://github.com/windtalker) + - 减少 IndexLookUp 算子在查询被 cancel 时打印的无用日志 [#61072](https://github.com/pingcap/tidb/issues/61072) @[yibin87](https://github.com/yibin87) + - 修复 Aggregation 算子在发生内存超限时导致的 goroutine 泄漏问题 [#58004](https://github.com/pingcap/tidb/issues/58004) @[xzhangxian1008](https://github.com/xzhangxian1008) + - 修复 bit 类型表的 stats 无法加载的问题 [#62289](https://github.com/pingcap/tidb/issues/62289) @[YangKeao](https://github.com/YangKeao) + - 修复 hashjoin v1 算子 Close() 方法没有 recovery panic 的问题 [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) + - 修复 index merge/index lookup 算子下发查询时共享 kv request 导致的 data race [#60175](https://github.com/pingcap/tidb/issues/60175) @[you06](https://github.com/you06) + - 修复极端情况下当 ANALYZE 语句的落盘操作耗时太长时可能导致其他 TiDB 节点无法更新最新的统计信息的问题 [#54552](https://github.com/pingcap/tidb/issues/54552) @[0xPoe](https://github.com/0xPoe) + - 修复当收集的列统计信息完全为 TopN 时，即使有后续写入操作，估算也有可能一直为 0 的问题 [#47400](https://github.com/pingcap/tidb/issues/47400) @[terry1purcell](https://github.com/terry1purcell) + - 修复可能无法将 BIT 类型的列的统计信息加载入内存的问题 [#59759](https://github.com/pingcap/tidb/issues/59759) @[YangKeao](https://github.com/YangKeao) + - 修复 `explain format="cost_trace"` 展示的估算代价可能有错的问题 [#61155](https://github.com/pingcap/tidb/issues/61155) @[hawkingrei](https://github.com/hawkingrei) + - 修复 `explain format="cost_trace"` 展示的代价计算公式中可能包含空括号的问题 [#61127](https://github.com/pingcap/tidb/issues/61127) @[hawkingrei](https://github.com/hawkingrei) + - 修复外键定义成环时的死循坏问题 [#60985](https://github.com/pingcap/tidb/issues/60985) @[hawkingrei](https://github.com/hawkingrei) + - 修复内部查询在使用 `NULL` 构造索引范围查询时可能构造能力不足的问题 [#62196](https://github.com/pingcap/tidb/issues/62196) @[hawkingrei](https://github.com/hawkingrei) + - 修复 Plan Cache 缓存了错误的执行计划导致执行报错的问题 [#56772](https://github.com/pingcap/tidb/issues/56772) @[dash12653](https://github.com/dash12653) + - 修复跨月、跨年的行数估算可能过分偏大的问题 [#50080](https://github.com/pingcap/tidb/issues/50080) @[terry1purcell](https://github.com/terry1purcell) + - 修复 ANALYZE 子任务并发数过于超出设置参数的问题 [#61785](https://github.com/pingcap/tidb/issues/61785) @[hawkingrei](https://github.com/hawkingrei) + - 修复在 TopN 下推过程中错误生成带表达式的TopN排序项 [#60655](https://github.com/pingcap/tidb/issues/60655) @[hawkingrei](https://github.com/hawkingrei) + - 修复没有列、索引的统计信息时，TiDB 可能在后台打印 panic 日志的问题 [#61733](https://github.com/pingcap/tidb/issues/61733) @[winoros](https://github.com/winoros) + - 正确设置内部会话的系统变量的 `tidb_cost_model_version` 的默认值 [#61565](https://github.com/pingcap/tidb/issues/61565) @[hawkingrei](https://github.com/hawkingrei) + - 修复当表的第一列为虚拟生成列时，统计信息可能出错的问题 [#61606](https://github.com/pingcap/tidb/issues/61606) @[winoros](https://github.com/winoros) + - 修复错误的跳过 plan cache，当进行谓词简化 [#61513](https://github.com/pingcap/tidb/issues/61513) @[hawkingrei](https://github.com/hawkingrei) + - 修复特定情况下当缺少列、索引的统计信息时，JOIN 的行数估算可能偏差过大的问题 [#61602](https://github.com/pingcap/tidb/issues/61602) @[qw4990](https://github.com/qw4990) + - 修复加索引时 cancel ddl job 导致加索引卡住的问题 [#61087](https://github.com/pingcap/tidb/issues/61087) @[tangenta](https://github.com/tangenta) + - 修复 fast admin check 在一些内部 SQL 执行失败后仍然返回成功的问题 [#61612](https://github.com/pingcap/tidb/issues/61612) @[joechenrh](https://github.com/joechenrh) + - 修复通过 multi-schema change 加索引之后数据索引不一致的问题 [#61255](https://github.com/pingcap/tidb/issues/61255) @[tangenta](https://github.com/tangenta) + ++ TiKV -+ TiKV - - - note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - 修复 Unsafe Recovery 被某些 TiFlash 副本阻塞，导致无法推进的问题 [18197](https://github.com/tikv/tikv/issues/18197) @[v01dstar](https://github.com/v01dstar) - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix the issue that TiKV might use a compression algorithm that the client cannot decode [#18079](https://github.com/tikv/tikv/issues/18079) @[ekexium](https://github.com/ekexium) - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix the issue that TiKV allows excessive SST ingest requests under high concurrency [#18452](https://github.com/tikv/tikv/issues/18452) @[hbisheng](https://github.com/hbisheng) - (dup): release-8.3.0.md > Bug fixes> TiKV - Fix the issue that `Ingestion picked level` and `Compaction Job Size(files)` are displayed incorrectly in the TiKV dashboard in Grafana [#15990](https://github.com/tikv/tikv/issues/15990) @[Connor1996](https://github.com/Connor1996) @@ -126,17 +157,17 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - (dup): release-6.5.9.md > Bug fixes> TiKV - Fix the issue that TiKV converts the time zone incorrectly for Brazil and Egypt [#16220](https://github.com/tikv/tikv/issues/16220) @[overvenus](https://github.com/overvenus) - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix misleading descriptions in `StoreMsg` log entries in slow logs [#18561](https://github.com/tikv/tikv/issues/18561) @[LykxSassinator](https://github.com/LykxSassinator) - (dup): release-9.0.0.md > Bug fixes> TiKV - Fix incorrect thread memory metrics [#18125](https://github.com/tikv/tikv/issues/18125) @[Connor1996](https://github.com/Connor1996) + - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix the issue that TiKV fails to terminate ongoing manual compaction tasks during graceful shutdown [#18396](https://github.com/tikv/tikv/issues/18396) @[LykxSassinator](https://github.com/LykxSassinator) -+ PD ++ PD - - - Fix the issue that the default value of `lease` is not correctly set [#9156](https://github.com/tikv/pd/issues/9156) @[rleungx](https://github.com/rleungx) - Fix the issue that the `split-merge-interval` configuration item might not take effect when you modify its value repeatedly (such as changing it from `1s` to `1h` and back to `1s`) [#8404](https://github.com/tikv/pd/issues/8404) @[lhy1024](https://github.com/lhy1024) + - Fix the issue that the default value of `lease` is not correctly set [#9156](https://github.com/tikv/pd/issues/9156) @[rleungx](https://github.com/rleungx) - Fix the issue that pd goroutine leak due to the dashboard connections don't close well [#9402](https://github.com/tikv/pd/issues/9402) @[baurine](https://github.com/baurine) - Fix the issue that the new store cna't be balanced [#9145](https://github.com/tikv/pd/issues/9145) @[bufferflies](https://github.com/bufferflies) - Fix the issue that client can't get any tso after enabled the variable `tidb_enable_tso_follower_proxy`[#9188](https://github.com/tikv/pd/issues/9188) @[Tema](https://github.com/Tema) -+ TiFlash ++ TiFlash - note [#issue](https://github.com/pingcap/tiflash/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - Fix the panic issue caused by accidental deletion of SST files during running `IMPORT INTO` or `BR restore` [#10141](https://github.com/pingcap/tiflash/issues/10141) @[CalvinNeo](https://github.com/CalvinNeo) @@ -146,6 +177,10 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might fail to restart after inserting a single row of data larger than 16 MiB [#10052](https://github.com/pingcap/tiflash/issues/10052) @[JaySon-Huang](https://github.com/JaySon-Huang) - (dup): release-8.5.3.md > Bug fixes> TiFlash - Fix the issue that missing resource control low token signals lead to query throttling [#10137](https://github.com/pingcap/tiflash/issues/10137) @[guo-shaoge](https://github.com/guo-shaoge) - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might return the `Exception: Block schema mismatch` error when executing SQL statements containing `GROUP BY ... WITH ROLLUP` [#10110](https://github.com/pingcap/tiflash/issues/10110) @[gengliqi](https://github.com/gengliqi) + - 降低因为 SSL 重新加载导致 TiFlash crash 的可能性(#8535) [#8535](https://github.com/pingcap/tiflash/issues/8535) @[windtalker](https://github.com/windtalker) + - 修复 TiFlash 报错 fmt::v10::format_error unmatched '}' in format string [#9087](https://github.com/pingcap/tiflash/issues/9087) @[windtalker](https://github.com/windtalker) + - 修复执行包含 `GROUP BY ... WITH ROLLUP` 的 SQL 语句时，可能会出现 `Exception: Block schema mismatch` 报错的问题 [#10110](https://github.com/pingcap/tiflash/issues/10110) @[gengliqi](https://github.com/gengliqi) + - 修复 TiFlash resource control 信号丢失导致的非预期的查询受限问题 [#10137](https://github.com/pingcap/tiflash/issues/10137) @[guo-shaoge](https://github.com/guo-shaoge) + Tools @@ -155,12 +190,16 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - (dup): release-8.5.2.md > Bug fixes> Tools> Backup & Restore (BR) - Fix the issue that PITR fails to restore indexes larger than 3072 bytes [#58430](https://github.com/pingcap/tidb/issues/58430) @[YuJuncen](https://github.com/YuJuncen) - (dup): release-8.5.3.md > Bug fixes> Tools> Backup & Restore (BR) - Fix the issue that log backup uploads to Azure Blob Storage are slow when transferring large volumes of data [#18410](https://github.com/tikv/tikv/issues/18410) @[YuJuncen](https://github.com/YuJuncen) + - (dup): release-8.5.3.md > Bug fixes> Tools> Backup & Restore (BR) - Fix the issue that BR does not check whether the corresponding table exists in the cluster when filtering tables with `-f` [#61592](https://github.com/pingcap/tidb/issues/61592) @[RidRisR](https://github.com/RidRisR) - + TiCDC + + TiCDC - Fix a bug that may cause changefeed with storage sink getting stuck [#9162](https://github.com/pingcap/tiflow/issues/9162) @[asddongmen](https://github.com/asddongmen) - - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - (dup): release-8.5.2.md > Bug fixes> Tools> TiCDC - Fix the issue that the changefeed might get stuck after the replication traffic exceeds the traffic threshold of the downstream Kafka [#12110](https://github.com/pingcap/tiflow/issues/12110) @[3AceShowHand](https://github.com/3AceShowHand) + - (dup): release-6.5.12.md > Bug fixes> Tools> TiCDC - Fix the issue that using the `--overwrite-checkpoint-ts` parameter in the `changefeed pause` command might cause the changefeed to be stuck [#12055](https://github.com/pingcap/tiflow/issues/12055) @[hongyunyan](https://github.com/hongyunyan) + - (dup): release-8.5.3.md > Bug fixes> Tools> TiCDC - Fix the issue that evaluating event filter expressions on tables containing virtual columns might cause a panic [#12206](https://github.com/pingcap/tiflow/issues/12206) @[lidezhu](https://github.com/lidezhu) + - (dup): release-8.5.3.md > Bug fixes> Tools> TiCDC - Fix the issue of case-sensitive matching for column and index names in the dispatcher configuration [#12103](https://github.com/pingcap/tiflow/issues/12103) @[wk989898](https://github.com/wk989898) + - (dup): release-8.5.3.md > Bug fixes> Tools> TiCDC - Fix the issue that the resolved ts lag keeps increasing after scaling in or out TiKV nodes on the same IP address because of outdated store IDs [#12162](https://github.com/pingcap/tiflow/issues/12162) @[3AceShowHand](https://github.com/3AceShowHand) + TiDB Data Migration (DM) @@ -172,7 +211,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - (dup): release-8.5.2.md > Bug fixes> Tools> TiDB Lightning - Fix the issue that TiDB Lightning can get stuck for several hours when importing Parquet files from cloud storage into TiDB [#60224](https://github.com/pingcap/tidb/issues/60224) @[joechenrh](https://github.com/joechenrh) - - (dup): release-8.5.3.md > 错误修复> Tools> TiDB Lightning - 修复 lightning 向 TiKV 发起的 RPC 请求超时后返回 context deadline 的问题 [#61326](https://github.com/pingcap/tidb/issues/61326) @[OliverS929](https://github.com/OliverS929) + - (dup): release-8.5.3.md > 错误修复> Tools> TiDB Lightning - 修复 TiDB Lightning 向 TiKV 发起的 RPC 请求超时后返回 `context deadline exceeded` 的问题 [#61326](https://github.com/pingcap/tidb/issues/61326) @[OliverS929](https://github.com/OliverS929) + Dumpling From 6430cd4668ab1442a0b7428f56e869879269e5fc Mon Sep 17 00:00:00 2001 From: Grace Cai Date: Thu, 14 Aug 2025 17:24:55 +0800 Subject: [PATCH 07/27] sync from zh changes --- releases/release-7.5.7.md | 18 +++++++----------- 1 file changed, 7 insertions(+), 11 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 8c46733faf666..f45ccef04dbd4 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -149,7 +149,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + TiKV - note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - 修复 Unsafe Recovery 被某些 TiFlash 副本阻塞，导致无法推进的问题 [18197](https://github.com/tikv/tikv/issues/18197) @[v01dstar](https://github.com/v01dstar) + - Fix the issue that Online Unsafe Recovery might be blocked by certain TiFlash replicas, preventing the commit index from advancing [18197](https://github.com/tikv/tikv/issues/18197) @[v01dstar](https://github.com/v01dstar) - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix the issue that TiKV might use a compression algorithm that the client cannot decode [#18079](https://github.com/tikv/tikv/issues/18079) @[ekexium](https://github.com/ekexium) - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix the issue that TiKV allows excessive SST ingest requests under high concurrency [#18452](https://github.com/tikv/tikv/issues/18452) @[hbisheng](https://github.com/hbisheng) - (dup): release-8.3.0.md > Bug fixes> TiKV - Fix the issue that `Ingestion picked level` and `Compaction Job Size(files)` are displayed incorrectly in the TiKV dashboard in Grafana [#15990](https://github.com/tikv/tikv/issues/15990) @[Connor1996](https://github.com/Connor1996) @@ -161,11 +161,11 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + PD - - Fix the issue that the `split-merge-interval` configuration item might not take effect when you modify its value repeatedly (such as changing it from `1s` to `1h` and back to `1s`) [#8404](https://github.com/tikv/pd/issues/8404) @[lhy1024](https://github.com/lhy1024) - - Fix the issue that the default value of `lease` is not correctly set [#9156](https://github.com/tikv/pd/issues/9156) @[rleungx](https://github.com/rleungx) - - Fix the issue that pd goroutine leak due to the dashboard connections don't close well [#9402](https://github.com/tikv/pd/issues/9402) @[baurine](https://github.com/baurine) - - Fix the issue that the new store cna't be balanced [#9145](https://github.com/tikv/pd/issues/9145) @[bufferflies](https://github.com/bufferflies) - - Fix the issue that client can't get any tso after enabled the variable `tidb_enable_tso_follower_proxy`[#9188](https://github.com/tikv/pd/issues/9188) @[Tema](https://github.com/Tema) + - (dup): release-8.3.0.md > Bug fixes> PD - Fix the issue that the `split-merge-interval` configuration item might not take effect when you modify its value repeatedly (such as changing it from `1s` to `1h` and back to `1s`) [#8404](https://github.com/tikv/pd/issues/8404) @[lhy1024](https://github.com/lhy1024) + - (dup): release-8.5.2.md > Bug fixes> PD - Fix the issue that the default value of `lease` is not correctly set [#9156](https://github.com/tikv/pd/issues/9156) @[rleungx](https://github.com/rleungx) + - (dup): release-8.5.3.md > Bug fixes> PD Fix the issue that improperly closing TiDB Dashboard TCP connections could lead to PD goroutine leaks [#9402](https://github.com/tikv/pd/issues/9402) @[baurine](https://github.com/baurine) + - (dup): release-8.5.3.md > Bug fixes> PD - Fix the issue that newly added TiKV nodes might fail to be scheduled [#9145](https://github.com/tikv/pd/issues/9145) @[bufferflies](https://github.com/bufferflies) + - Fix the issue that enabling `tidb_enable_tso_follower_proxy` might cause the TSO service to become unavailable [#9188](https://github.com/tikv/pd/issues/9188) @[Tema](https://github.com/Tema) + TiFlash @@ -177,10 +177,6 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might fail to restart after inserting a single row of data larger than 16 MiB [#10052](https://github.com/pingcap/tiflash/issues/10052) @[JaySon-Huang](https://github.com/JaySon-Huang) - (dup): release-8.5.3.md > Bug fixes> TiFlash - Fix the issue that missing resource control low token signals lead to query throttling [#10137](https://github.com/pingcap/tiflash/issues/10137) @[guo-shaoge](https://github.com/guo-shaoge) - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might return the `Exception: Block schema mismatch` error when executing SQL statements containing `GROUP BY ... WITH ROLLUP` [#10110](https://github.com/pingcap/tiflash/issues/10110) @[gengliqi](https://github.com/gengliqi) - - 降低因为 SSL 重新加载导致 TiFlash crash 的可能性(#8535) [#8535](https://github.com/pingcap/tiflash/issues/8535) @[windtalker](https://github.com/windtalker) - - 修复 TiFlash 报错 fmt::v10::format_error unmatched '}' in format string [#9087](https://github.com/pingcap/tiflash/issues/9087) @[windtalker](https://github.com/windtalker) - - 修复执行包含 `GROUP BY ... WITH ROLLUP` 的 SQL 语句时，可能会出现 `Exception: Block schema mismatch` 报错的问题 [#10110](https://github.com/pingcap/tiflash/issues/10110) @[gengliqi](https://github.com/gengliqi) - - 修复 TiFlash resource control 信号丢失导致的非预期的查询受限问题 [#10137](https://github.com/pingcap/tiflash/issues/10137) @[guo-shaoge](https://github.com/guo-shaoge) + Tools @@ -194,7 +190,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + TiCDC - - Fix a bug that may cause changefeed with storage sink getting stuck [#9162](https://github.com/pingcap/tiflow/issues/9162) @[asddongmen](https://github.com/asddongmen) + - Fix the issue that the changefeed might get stuck when using external storage as the downstream [#9162](https://github.com/pingcap/tiflow/issues/9162) @[asddongmen](https://github.com/asddongmen) - (dup): release-8.5.2.md > Bug fixes> Tools> TiCDC - Fix the issue that the changefeed might get stuck after the replication traffic exceeds the traffic threshold of the downstream Kafka [#12110](https://github.com/pingcap/tiflow/issues/12110) @[3AceShowHand](https://github.com/3AceShowHand) - (dup): release-6.5.12.md > Bug fixes> Tools> TiCDC - Fix the issue that using the `--overwrite-checkpoint-ts` parameter in the `changefeed pause` command might cause the changefeed to be stuck [#12055](https://github.com/pingcap/tiflow/issues/12055) @[hongyunyan](https://github.com/hongyunyan) - (dup): release-8.5.3.md > Bug fixes> Tools> TiCDC - Fix the issue that evaluating event filter expressions on tables containing virtual columns might cause a panic [#12206](https://github.com/pingcap/tiflow/issues/12206) @[lidezhu](https://github.com/lidezhu) From 52d721430614ba746daa7c4cd871d5b29c4954c7 Mon Sep 17 00:00:00 2001 From: Grace Cai Date: Thu, 14 Aug 2025 17:25:55 +0800 Subject: [PATCH 08/27] add #8931 to PD improvements --- releases/release-7.5.7.md | 1 + 1 file changed, 1 insertion(+) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index f45ccef04dbd4..038565b05a697 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -53,6 +53,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + PD + - (dup): release-8.5.3.md > 改进提升> PD - 增加了 GO Runtime 相关监控 [#8931](https://github.com/tikv/pd/issues/8931) @[bufferflies](https://github.com/bufferflies) - Add more metrics for Golang Runtime, details can be seen at the runtime panel [#8931](https://github.com/tikv/pd/issues/8931) @[bufferflies](https://github.com/bufferflies) - 减少一些非必要 error 日志 [#9370](https://github.com/tikv/pd/issues/9370) @[bufferflies](https://github.com/bufferflies) From ec33168d0b2329d6182b1d5eb09cb12d51e678d2 Mon Sep 17 00:00:00 2001 From: xixirangrang Date: Mon, 18 Aug 2025 15:53:18 +0800 Subject: [PATCH 09/27] Update releases/release-7.5.7.md --- releases/release-7.5.7.md | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 038565b05a697..34f31e9d16cf2 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -133,19 +133,19 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - 修复 `explain format="cost_trace"` 展示的估算代价可能有错的问题 [#61155](https://github.com/pingcap/tidb/issues/61155) @[hawkingrei](https://github.com/hawkingrei) - 修复 `explain format="cost_trace"` 展示的代价计算公式中可能包含空括号的问题 [#61127](https://github.com/pingcap/tidb/issues/61127) @[hawkingrei](https://github.com/hawkingrei) - 修复外键定义成环时的死循坏问题 [#60985](https://github.com/pingcap/tidb/issues/60985) @[hawkingrei](https://github.com/hawkingrei) - - 修复内部查询在使用 `NULL` 构造索引范围查询时可能构造能力不足的问题 [#62196](https://github.com/pingcap/tidb/issues/62196) @[hawkingrei](https://github.com/hawkingrei) - - 修复 Plan Cache 缓存了错误的执行计划导致执行报错的问题 [#56772](https://github.com/pingcap/tidb/issues/56772) @[dash12653](https://github.com/dash12653) - - 修复跨月、跨年的行数估算可能过分偏大的问题 [#50080](https://github.com/pingcap/tidb/issues/50080) @[terry1purcell](https://github.com/terry1purcell) - - 修复 ANALYZE 子任务并发数过于超出设置参数的问题 [#61785](https://github.com/pingcap/tidb/issues/61785) @[hawkingrei](https://github.com/hawkingrei) - - 修复在 TopN 下推过程中错误生成带表达式的TopN排序项 [#60655](https://github.com/pingcap/tidb/issues/60655) @[hawkingrei](https://github.com/hawkingrei) - - 修复没有列、索引的统计信息时，TiDB 可能在后台打印 panic 日志的问题 [#61733](https://github.com/pingcap/tidb/issues/61733) @[winoros](https://github.com/winoros) - - 正确设置内部会话的系统变量的 `tidb_cost_model_version` 的默认值 [#61565](https://github.com/pingcap/tidb/issues/61565) @[hawkingrei](https://github.com/hawkingrei) - - 修复当表的第一列为虚拟生成列时，统计信息可能出错的问题 [#61606](https://github.com/pingcap/tidb/issues/61606) @[winoros](https://github.com/winoros) - - 修复错误的跳过 plan cache，当进行谓词简化 [#61513](https://github.com/pingcap/tidb/issues/61513) @[hawkingrei](https://github.com/hawkingrei) - - 修复特定情况下当缺少列、索引的统计信息时，JOIN 的行数估算可能偏差过大的问题 [#61602](https://github.com/pingcap/tidb/issues/61602) @[qw4990](https://github.com/qw4990) - - 修复加索引时 cancel ddl job 导致加索引卡住的问题 [#61087](https://github.com/pingcap/tidb/issues/61087) @[tangenta](https://github.com/tangenta) - - 修复 fast admin check 在一些内部 SQL 执行失败后仍然返回成功的问题 [#61612](https://github.com/pingcap/tidb/issues/61612) @[joechenrh](https://github.com/joechenrh) - - 修复通过 multi-schema change 加索引之后数据索引不一致的问题 [#61255](https://github.com/pingcap/tidb/issues/61255) @[tangenta](https://github.com/tangenta) + - Fix the issue that internal queries might fail to construct index range queries properly when using `NULL` [#62196](https://github.com/pingcap/tidb/issues/62196) @[hawkingrei](https://github.com/hawkingrei) + - Fix the issue that Plan Cache stores an incorrect execution plan, causing execution errors [#56772](https://github.com/pingcap/tidb/issues/56772) @[dash12653](https://github.com/dash12653) + - Fix the issue that row count estimates across months or years can be significantly overestimated [#50080](https://github.com/pingcap/tidb/issues/50080) @[terry1purcell](https://github.com/terry1purcell) + - Fix the issue that the concurrency of `ANALYZE` subtasks greatly exceeds the configured limit [#61785](https://github.com/pingcap/tidb/issues/61785) @[hawkingrei](https://github.com/hawkingrei) + - Fix the issue that an expression-based TopN sort item is incorrectly generated during TopN pushdown [#60655](https://github.com/pingcap/tidb/issues/60655) @[hawkingrei](https://github.com/hawkingrei) + - Fix the issue that TiDB might print panic logs in the background when column or index statistics are missing [#61733](https://github.com/pingcap/tidb/issues/61733) @[winoros](https://github.com/winoros) + - Fix the issue that row count estimation for `JOIN` can be highly inaccurate when column or index statistics are missing [#61602](https://github.com/pingcap/tidb/issues/61602) @[qw4990](https://github.com/qw4990) + - Fix the issue that the default value of the system variable `tidb_cost_model_version` is set incorrectly [#61565](https://github.com/pingcap/tidb/issues/61565) @[hawkingrei](https://github.com/hawkingrei) + - Fix the issue that statistics might be incorrect when the first column of a table is a virtual generated column [#61606](https://github.com/pingcap/tidb/issues/61606) @[winoros](https://github.com/winoros) + - Fix the issue that Plan Cache is incorrectly skipped with predicate simplification[#61513](https://github.com/pingcap/tidb/issues/61513) @[hawkingrei](https://github.com/hawkingrei) + - Fix the issue that executing `ADMIN CANCEL DDL JOBS` while adding an index causes the index-adding process to hang [#61087](https://github.com/pingcap/tidb/issues/61087) @[tangenta](https://github.com/tangenta) + - Fix the issue that `ADMIN CHECK` still returns success even after some internal SQL executions fail [#61612](https://github.com/pingcap/tidb/issues/61612) @[joechenrh](https://github.com/joechenrh) + - Fix the issue that data and indexes became inconsistent after adding an index after multi-schema change [#61255](https://github.com/pingcap/tidb/issues/61255) @[tangenta](https://github.com/tangenta) + TiKV From 55e05830313bfe56eb654940535438fcd145691f Mon Sep 17 00:00:00 2001 From: xixirangrang Date: Mon, 18 Aug 2025 17:49:42 +0800 Subject: [PATCH 10/27] Update releases/release-7.5.7.md --- releases/release-7.5.7.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 34f31e9d16cf2..ce24efacd970c 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -145,7 +145,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - Fix the issue that Plan Cache is incorrectly skipped with predicate simplification[#61513](https://github.com/pingcap/tidb/issues/61513) @[hawkingrei](https://github.com/hawkingrei) - Fix the issue that executing `ADMIN CANCEL DDL JOBS` while adding an index causes the index-adding process to hang [#61087](https://github.com/pingcap/tidb/issues/61087) @[tangenta](https://github.com/tangenta) - Fix the issue that `ADMIN CHECK` still returns success even after some internal SQL executions fail [#61612](https://github.com/pingcap/tidb/issues/61612) @[joechenrh](https://github.com/joechenrh) - - Fix the issue that data and indexes became inconsistent after adding an index after multi-schema change [#61255](https://github.com/pingcap/tidb/issues/61255) @[tangenta](https://github.com/tangenta) + - Fix the issue that data and indexes became inconsistent after adding multiple indexes through multi-schema change [#61255](https://github.com/pingcap/tidb/issues/61255) @[tangenta](https://github.com/tangenta) + TiKV From d5ede3b53a7a01982b483b7f6d3ec24db4ff25d7 Mon Sep 17 00:00:00 2001 From: xixirangrang Date: Tue, 19 Aug 2025 10:10:04 +0800 Subject: [PATCH 11/27] Update releases/release-7.5.7.md --- releases/release-7.5.7.md | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index ce24efacd970c..30acab983a2c4 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -121,18 +121,18 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - (dup): release-8.5.2.md > Bug fixes> TiDB - Fix the issue that executing `ADD UNIQUE INDEX` might cause data inconsistency [#60339](https://github.com/pingcap/tidb/issues/60339) @[tangenta](https://github.com/tangenta) - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that non-public indexes are shown in the statistics system table [#60430](https://github.com/pingcap/tidb/issues/60430) @[tangenta](https://github.com/tangenta) - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that the HashJoin operator causes Goroutine leaks due to memory overuse [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) - - 修复 PhysicalExchangeSender.HashCol 浅拷贝导致的 TiFlash crash 或者结果错误的问题 [#60517](https://github.com/pingcap/tidb/issues/60517) @[windtalker](https://github.com/windtalker) - - 减少 IndexLookUp 算子在查询被 cancel 时打印的无用日志 [#61072](https://github.com/pingcap/tidb/issues/61072) @[yibin87](https://github.com/yibin87) - - 修复 Aggregation 算子在发生内存超限时导致的 goroutine 泄漏问题 [#58004](https://github.com/pingcap/tidb/issues/58004) @[xzhangxian1008](https://github.com/xzhangxian1008) - - 修复 bit 类型表的 stats 无法加载的问题 [#62289](https://github.com/pingcap/tidb/issues/62289) @[YangKeao](https://github.com/YangKeao) - - 修复 hashjoin v1 算子 Close() 方法没有 recovery panic 的问题 [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) - - 修复 index merge/index lookup 算子下发查询时共享 kv request 导致的 data race [#60175](https://github.com/pingcap/tidb/issues/60175) @[you06](https://github.com/you06) - - 修复极端情况下当 ANALYZE 语句的落盘操作耗时太长时可能导致其他 TiDB 节点无法更新最新的统计信息的问题 [#54552](https://github.com/pingcap/tidb/issues/54552) @[0xPoe](https://github.com/0xPoe) - - 修复当收集的列统计信息完全为 TopN 时，即使有后续写入操作，估算也有可能一直为 0 的问题 [#47400](https://github.com/pingcap/tidb/issues/47400) @[terry1purcell](https://github.com/terry1purcell) - - 修复可能无法将 BIT 类型的列的统计信息加载入内存的问题 [#59759](https://github.com/pingcap/tidb/issues/59759) @[YangKeao](https://github.com/YangKeao) - - 修复 `explain format="cost_trace"` 展示的估算代价可能有错的问题 [#61155](https://github.com/pingcap/tidb/issues/61155) @[hawkingrei](https://github.com/hawkingrei) - - 修复 `explain format="cost_trace"` 展示的代价计算公式中可能包含空括号的问题 [#61127](https://github.com/pingcap/tidb/issues/61127) @[hawkingrei](https://github.com/hawkingrei) - - 修复外键定义成环时的死循坏问题 [#60985](https://github.com/pingcap/tidb/issues/60985) @[hawkingrei](https://github.com/hawkingrei) + - Fix the issue that shallow copy of `PhysicalExchangeSender.HashCol` causes TiFlash to crash or generate incorrect results [#60517](https://github.com/pingcap/tidb/issues/60517) @[windtalker](https://github.com/windtalker) + - Fix the issue that the `IndexLookUp` operator prints useless logs when a query is canceled [#61072](https://github.com/pingcap/tidb/issues/61072) @[yibin87](https://github.com/yibin87) + - Fix the issue that the `Aggregation` operator causes Goroutine leaks when memory overflows [#58004](https://github.com/pingcap/tidb/issues/58004) @[xzhangxian1008](https://github.com/xzhangxian1008) + - Fix the issue that statistics of tables with the `BIT` type cannot be loaded [#62289](https://github.com/pingcap/tidb/issues/62289) @[YangKeao](https://github.com/YangKeao) + - Fix the issue that the `Close()` method of the Hash Join v1 operator fails to recover from a panic [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) + - Fix the issue that sharing KV requests between the `Index Merge` and `Index Lookup` operators during query execution causes data races [#60175](https://github.com/pingcap/tidb/issues/60175) @[you06](https://github.com/you06) + - Fix the issue that when the disk-spilling operation of an `ANALYZE` statement takes too long in extreme cases, other TiDB nodes might fail to update the latest statistics [#54552](https://github.com/pingcap/tidb/issues/54552) @[0xPoe](https://github.com/0xPoe) + - Fix the issue that when the collected column statistics are all in TopN, the row count estimate might always be 0 even if there are subsequent writes [#47400](https://github.com/pingcap/tidb/issues/47400) @[terry1purcell](https://github.com/terry1purcell) + - Fix the issue that statistics of `BIT` type columns might fail to load into memory [#59759](https://github.com/pingcap/tidb/issues/59759) @[YangKeao](https://github.com/YangKeao) + - Fix the issue that the estimated cost displayed in `explain format="cost_trace"` might be incorrect [#61155](https://github.com/pingcap/tidb/issues/61155) @[hawkingrei](https://github.com/hawkingrei) + - Fix the issue that the cost formulas displayed in `explain format="cost_trace"` might contain empty parentheses [#61127](https://github.com/pingcap/tidb/issues/61127) @[hawkingrei](https://github.com/hawkingrei) + - Fix the issue that circular foreign key definitions cause infinite loops [#60985](https://github.com/pingcap/tidb/issues/60985) @[hawkingrei](https://github.com/hawkingrei) - Fix the issue that internal queries might fail to construct index range queries properly when using `NULL` [#62196](https://github.com/pingcap/tidb/issues/62196) @[hawkingrei](https://github.com/hawkingrei) - Fix the issue that Plan Cache stores an incorrect execution plan, causing execution errors [#56772](https://github.com/pingcap/tidb/issues/56772) @[dash12653](https://github.com/dash12653) - Fix the issue that row count estimates across months or years can be significantly overestimated [#50080](https://github.com/pingcap/tidb/issues/50080) @[terry1purcell](https://github.com/terry1purcell) From 43dfaca950bf38b3ef8b768168608d9752b819e3 Mon Sep 17 00:00:00 2001 From: Aolin Date: Thu, 21 Aug 2025 14:38:48 +0800 Subject: [PATCH 12/27] update TiDB, TiKV, and PD parts --- releases/release-7.5.7.md | 25 ++++++++++++------------- 1 file changed, 12 insertions(+), 13 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 30acab983a2c4..1c25a0e930b78 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -15,7 +15,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- -- 将系统变量 `tidb_enable_historical_stats` 的默认值从 `ON` 修改为 `OFF`，即默认关闭历史统计信息，避免潜在的稳定性问题 [#53048](https://github.com/pingcap/tidb/issues/53048) @[hawkingrei](https://github.com/hawkingrei) +- Change the default value of `tidb_enable_historical_stats` from `ON` to `OFF`, which turns off historical statistics to avoid potential stability issues [#53048](https://github.com/pingcap/tidb/issues/53048) @[hawkingrei](https://github.com/hawkingrei) ## Improvements @@ -26,18 +26,18 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - (dup): release-8.5.3.md > Improvements> TiDB - Add flow control interfaces for Region splitting and data ingestion during data import [#61553](https://github.com/pingcap/tidb/issues/61553) @[tangenta](https://github.com/tangenta) - (dup): release-8.2.0.md > Improvements> TiDB - Optimize the performance of obtaining data distribution information when performing simple queries on tables with large data volumes [#53850](https://github.com/pingcap/tidb/issues/53850) @[you06](https://github.com/you06) - (dup): release-8.5.3.md > Improvements> TiDB - Add a monitoring metric to observe the write speed to TiKV during index addition [#60925](https://github.com/pingcap/tidb/issues/60925) @[CbcWestwolf](https://github.com/CbcWestwolf) - - 优化了 DML 在 DDL 执行期间的加锁逻辑，减少了 DML 和 DDL 操作的锁冲突，提高了某些场景下 DDL 的性能。但是由于在此过程中也会引入额外的二级索引加锁操作，可能会造成 DML 性能轻微下降 [#62337](https://github.com/pingcap/tidb/issues/62337) @[lcwangchao](https://github.com/lcwangchao) - - 调整 `tidb_opt_ordering_index_selectivity_threshold` 值为 1 时的行为，增强变量的控制能力 [#60242](https://github.com/pingcap/tidb/issues/60242) @[time-and-fate](https://github.com/time-and-fate) - - 避免 ANALYZE 执行完成后需要刷新整个集群的统计信息，从而导致 ANALYZE 执行时间过长的情况 [#57631](https://github.com/pingcap/tidb/issues/57631) @[0xPoe](https://github.com/0xPoe) - - 常量折叠可以将带有 NOT NULL 约束的列上进行的 IS NULL 计算折叠为 FALSE [#62050](https://github.com/pingcap/tidb/issues/62050) @[hawkingrei](https://github.com/hawkingrei) - - 优化器支持更多 JOIN 的常量传播 [#51700](https://github.com/pingcap/tidb/issues/51700) @[hawkingrei](https://github.com/hawkingrei) - - 优化在 DML 与 DDL 存在较多锁冲突时，合并 temp index 的性能 [#61433](https://github.com/pingcap/tidb/issues/61433) @[tangenta](https://github.com/tangenta) + - Optimize the locking logic of DML during DDL execution to reduce lock conflicts between DML and DDL operations, improving DDL performance in some scenarios. However, due to the additional secondary index locking operations, DML performance might decrease slightly [#62337](https://github.com/pingcap/tidb/issues/62337) @[lcwangchao](https://github.com/lcwangchao) + - Improve the behavior when the system variable `tidb_opt_ordering_index_selectivity_threshold` is set to `1`, enhancing the control capability of this variable [#60242](https://github.com/pingcap/tidb/issues/60242) @[time-and-fate](https://github.com/time-and-fate) + - Avoid refreshing statistics information across the entire cluster after `ANALYZE` statement execution, reducing the execution time of `ANALYZE` [#57631](https://github.com/pingcap/tidb/issues/57631) @[0xPoe](https://github.com/0xPoe) + - Support constant folding for columns with `NOT NULL` constraints, folding `IS NULL` evaluations into `FALSE` [#62050](https://github.com/pingcap/tidb/issues/62050) @[hawkingrei](https://github.com/hawkingrei) + - The optimizer supports constant propagation in more types of `JOIN` operations [#51700](https://github.com/pingcap/tidb/issues/51700) @[hawkingrei](https://github.com/hawkingrei) + - Improve the performance of temporary index merging when extensive lock conflicts exist between DML and DDL operations [#61433](https://github.com/pingcap/tidb/issues/61433) @[tangenta](https://github.com/tangenta) + TiKV - note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - 优化 TiKV compaction 触发逻辑，按回收效率排序对所有数据段依序处理，降低 MVCC 冗余数据对性能的影响 [#18571](https://github.com/tikv/tikv/issues/18571) @[v01dstar](https://github.com/v01dstar) - - 优化 async snapshot 和 write 在有大量 SST 文件的环境中的尾延迟 [#18743](https://github.com/tikv/tikv/issues/18743) @[Connor1996](https://github.com/Connor1996) + - Optimize the trigger logic of TiKV compaction to process all data segments in order of reclamation efficiency, reducing the performance impact of MVCC redundant data [#18571](https://github.com/tikv/tikv/issues/18571) @[v01dstar](https://github.com/v01dstar) + - Optimize the tail latency of async snapshot and write operations in environments with a large number of SST files [#18743](https://github.com/tikv/tikv/issues/18743) @[Connor1996](https://github.com/Connor1996) - (dup): release-8.1.2.md > Improvements> TiKV - Improve the speed of Region Merge in scenarios with empty tables and small Regions [#17376](https://github.com/tikv/tikv/issues/17376) @[LykxSassinator](https://github.com/LykxSassinator) - (dup): release-8.5.3.md > Improvements> TiKV - Optimize the handling of `CompactedEvent` in Raftstore by moving it to the `split-check` worker, reducing blocking on the main Raftstore thread [#18532](https://github.com/tikv/tikv/issues/18532) @[LykxSassinator](https://github.com/LykxSassinator) - (dup): release-8.1.0.md > Improvements> TiKV - Add metrics for memory usage per thread [#15927](https://github.com/tikv/tikv/issues/15927) @[Connor1996](https://github.com/Connor1996) @@ -53,9 +53,8 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + PD - - (dup): release-8.5.3.md > 改进提升> PD - 增加了 GO Runtime 相关监控 [#8931](https://github.com/tikv/pd/issues/8931) @[bufferflies](https://github.com/bufferflies) - - Add more metrics for Golang Runtime, details can be seen at the runtime panel [#8931](https://github.com/tikv/pd/issues/8931) @[bufferflies](https://github.com/bufferflies) - - 减少一些非必要 error 日志 [#9370](https://github.com/tikv/pd/issues/9370) @[bufferflies](https://github.com/bufferflies) + - (dup): release-8.5.3.md > Improvements> PD - Add GO runtime-related monitoring metrics in Prometheus [#8931](https://github.com/tikv/pd/issues/8931) @[bufferflies](https://github.com/bufferflies) + - Reduce unnecessary error logs [#9370](https://github.com/tikv/pd/issues/9370) @[bufferflies](https://github.com/bufferflies) + TiFlash @@ -70,7 +69,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + Backup & Restore (BR) - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - 在 Amazon EC2 上部署 TiDB 时，BR 支持 AWS 的 Instance Metadata Service Version 2 (IMDSv2)。你可以在 EC2 实例上进行相关配置，使 BR 可以使用与实例关联的 IAM 角色以适当的权限访问 Amazon S3 [#16443](https://github.com/tikv/tikv/issues/16443) @[pingyu](https://github.com/pingyu) + - When deploying TiDB on Amazon EC2, BR supports AWS Instance Metadata Service Version 2 (IMDSv2). You can configure your EC2 instance to allow BR to use the IAM role associated with the instance for appropriate permissions to access Amazon S3 [#16443](https://github.com/tikv/tikv/issues/16443) @[pingyu](https://github.com/pingyu) - (dup): release-8.5.3.md > Improvements> Tools> Backup & Restore (BR) - The Download API of TiKV supports filtering out data within a certain time range when downloading backup files, which avoids importing outdated or future data versions during restore [#18399](https://github.com/tikv/tikv/issues/18399) @[3pointer](https://github.com/3pointer) + TiCDC From 93802bd3045050e50c6ac2ffdae0182239bb5114 Mon Sep 17 00:00:00 2001 From: Lilian Lee Date: Fri, 22 Aug 2025 15:18:32 +0800 Subject: [PATCH 13/27] Apply suggestions from code review --- releases/release-7.5.7.md | 2 -- 1 file changed, 2 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 1c25a0e930b78..677065912014a 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -101,8 +101,6 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + TiDB - - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that shared KV requests in `IndexMerge` and `IndexLookUp` operators cause data races when pushing down queries [#60175](https://github.com/pingcap/tidb/issues/60175) @[you06](https://github.com/you06) - (dup): release-9.0.0.md > Bug fixes> TiDB - Fix a potential goroutine leak issue in the Hash Aggregation operator [#58004](https://github.com/pingcap/tidb/issues/58004) @[xzhangxian1008](https://github.com/xzhangxian1008) - (dup): release-7.6.0.md > Bug fixes> TiDB - Fix the issue that MPP plans might not be selected when indexes on generated columns are set as visible [#47766](https://github.com/pingcap/tidb/issues/47766) @[AilinKid](https://github.com/AilinKid) From 8ba90e79e79dbe2cdfbf5a2b5b2d6ba0874b91c7 Mon Sep 17 00:00:00 2001 From: Lilian Lee Date: Fri, 22 Aug 2025 16:10:45 +0800 Subject: [PATCH 14/27] Update wording and format --- releases/release-7.5.7.md | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 677065912014a..6bd98f3886133 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -121,12 +121,12 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - Fix the issue that shallow copy of `PhysicalExchangeSender.HashCol` causes TiFlash to crash or generate incorrect results [#60517](https://github.com/pingcap/tidb/issues/60517) @[windtalker](https://github.com/windtalker) - Fix the issue that the `IndexLookUp` operator prints useless logs when a query is canceled [#61072](https://github.com/pingcap/tidb/issues/61072) @[yibin87](https://github.com/yibin87) - Fix the issue that the `Aggregation` operator causes Goroutine leaks when memory overflows [#58004](https://github.com/pingcap/tidb/issues/58004) @[xzhangxian1008](https://github.com/xzhangxian1008) - - Fix the issue that statistics of tables with the `BIT` type cannot be loaded [#62289](https://github.com/pingcap/tidb/issues/62289) @[YangKeao](https://github.com/YangKeao) + - Fix the issue that statistics for tables with the `BIT` type cannot be loaded [#62289](https://github.com/pingcap/tidb/issues/62289) @[YangKeao](https://github.com/YangKeao) - Fix the issue that the `Close()` method of the Hash Join v1 operator fails to recover from a panic [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) - Fix the issue that sharing KV requests between the `Index Merge` and `Index Lookup` operators during query execution causes data races [#60175](https://github.com/pingcap/tidb/issues/60175) @[you06](https://github.com/you06) - Fix the issue that when the disk-spilling operation of an `ANALYZE` statement takes too long in extreme cases, other TiDB nodes might fail to update the latest statistics [#54552](https://github.com/pingcap/tidb/issues/54552) @[0xPoe](https://github.com/0xPoe) - - Fix the issue that when the collected column statistics are all in TopN, the row count estimate might always be 0 even if there are subsequent writes [#47400](https://github.com/pingcap/tidb/issues/47400) @[terry1purcell](https://github.com/terry1purcell) - - Fix the issue that statistics of `BIT` type columns might fail to load into memory [#59759](https://github.com/pingcap/tidb/issues/59759) @[YangKeao](https://github.com/YangKeao) + - Fix the issue that when the collected column statistics are all in TopN, the row count estimation might remain 0 even after subsequent writes [#47400](https://github.com/pingcap/tidb/issues/47400) @[terry1purcell](https://github.com/terry1purcell) + - Fix the issue that statistics of `BIT` type columns fail to be loaded into memory [#59759](https://github.com/pingcap/tidb/issues/59759) @[YangKeao](https://github.com/YangKeao) - Fix the issue that the estimated cost displayed in `explain format="cost_trace"` might be incorrect [#61155](https://github.com/pingcap/tidb/issues/61155) @[hawkingrei](https://github.com/hawkingrei) - Fix the issue that the cost formulas displayed in `explain format="cost_trace"` might contain empty parentheses [#61127](https://github.com/pingcap/tidb/issues/61127) @[hawkingrei](https://github.com/hawkingrei) - Fix the issue that circular foreign key definitions cause infinite loops [#60985](https://github.com/pingcap/tidb/issues/60985) @[hawkingrei](https://github.com/hawkingrei) @@ -135,7 +135,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - Fix the issue that row count estimates across months or years can be significantly overestimated [#50080](https://github.com/pingcap/tidb/issues/50080) @[terry1purcell](https://github.com/terry1purcell) - Fix the issue that the concurrency of `ANALYZE` subtasks greatly exceeds the configured limit [#61785](https://github.com/pingcap/tidb/issues/61785) @[hawkingrei](https://github.com/hawkingrei) - Fix the issue that an expression-based TopN sort item is incorrectly generated during TopN pushdown [#60655](https://github.com/pingcap/tidb/issues/60655) @[hawkingrei](https://github.com/hawkingrei) - - Fix the issue that TiDB might print panic logs in the background when column or index statistics are missing [#61733](https://github.com/pingcap/tidb/issues/61733) @[winoros](https://github.com/winoros) + - Fix the issue that TiDB might print panic logs in the background when column or index statistics are missing [#61733](https://github.com/pingcap/tidb/issues/61733) @[winoros](https://github.com/winoros) - Fix the issue that row count estimation for `JOIN` can be highly inaccurate when column or index statistics are missing [#61602](https://github.com/pingcap/tidb/issues/61602) @[qw4990](https://github.com/qw4990) - Fix the issue that the default value of the system variable `tidb_cost_model_version` is set incorrectly [#61565](https://github.com/pingcap/tidb/issues/61565) @[hawkingrei](https://github.com/hawkingrei) - Fix the issue that statistics might be incorrect when the first column of a table is a virtual generated column [#61606](https://github.com/pingcap/tidb/issues/61606) @[winoros](https://github.com/winoros) From 7b297d7127bfb3a5901764d30fd9da6c61381336 Mon Sep 17 00:00:00 2001 From: lilin90 Date: Fri, 22 Aug 2025 16:15:14 +0800 Subject: [PATCH 15/27] Update order --- releases/release-7.5.7.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 6bd98f3886133..51454908a9af7 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -122,11 +122,11 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - Fix the issue that the `IndexLookUp` operator prints useless logs when a query is canceled [#61072](https://github.com/pingcap/tidb/issues/61072) @[yibin87](https://github.com/yibin87) - Fix the issue that the `Aggregation` operator causes Goroutine leaks when memory overflows [#58004](https://github.com/pingcap/tidb/issues/58004) @[xzhangxian1008](https://github.com/xzhangxian1008) - Fix the issue that statistics for tables with the `BIT` type cannot be loaded [#62289](https://github.com/pingcap/tidb/issues/62289) @[YangKeao](https://github.com/YangKeao) + - Fix the issue that statistics of `BIT` type columns fail to be loaded into memory [#59759](https://github.com/pingcap/tidb/issues/59759) @[YangKeao](https://github.com/YangKeao) - Fix the issue that the `Close()` method of the Hash Join v1 operator fails to recover from a panic [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) - Fix the issue that sharing KV requests between the `Index Merge` and `Index Lookup` operators during query execution causes data races [#60175](https://github.com/pingcap/tidb/issues/60175) @[you06](https://github.com/you06) - Fix the issue that when the disk-spilling operation of an `ANALYZE` statement takes too long in extreme cases, other TiDB nodes might fail to update the latest statistics [#54552](https://github.com/pingcap/tidb/issues/54552) @[0xPoe](https://github.com/0xPoe) - Fix the issue that when the collected column statistics are all in TopN, the row count estimation might remain 0 even after subsequent writes [#47400](https://github.com/pingcap/tidb/issues/47400) @[terry1purcell](https://github.com/terry1purcell) - - Fix the issue that statistics of `BIT` type columns fail to be loaded into memory [#59759](https://github.com/pingcap/tidb/issues/59759) @[YangKeao](https://github.com/YangKeao) - Fix the issue that the estimated cost displayed in `explain format="cost_trace"` might be incorrect [#61155](https://github.com/pingcap/tidb/issues/61155) @[hawkingrei](https://github.com/hawkingrei) - Fix the issue that the cost formulas displayed in `explain format="cost_trace"` might contain empty parentheses [#61127](https://github.com/pingcap/tidb/issues/61127) @[hawkingrei](https://github.com/hawkingrei) - Fix the issue that circular foreign key definitions cause infinite loops [#60985](https://github.com/pingcap/tidb/issues/60985) @[hawkingrei](https://github.com/hawkingrei) From 3fd3deb66c4a6dfd17008437ed99d5657201bf6c Mon Sep 17 00:00:00 2001 From: Lilian Lee Date: Fri, 22 Aug 2025 16:19:34 +0800 Subject: [PATCH 16/27] Apply suggestions from code review --- releases/release-7.5.7.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 51454908a9af7..048a732fc38d9 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -121,8 +121,8 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - Fix the issue that shallow copy of `PhysicalExchangeSender.HashCol` causes TiFlash to crash or generate incorrect results [#60517](https://github.com/pingcap/tidb/issues/60517) @[windtalker](https://github.com/windtalker) - Fix the issue that the `IndexLookUp` operator prints useless logs when a query is canceled [#61072](https://github.com/pingcap/tidb/issues/61072) @[yibin87](https://github.com/yibin87) - Fix the issue that the `Aggregation` operator causes Goroutine leaks when memory overflows [#58004](https://github.com/pingcap/tidb/issues/58004) @[xzhangxian1008](https://github.com/xzhangxian1008) - - Fix the issue that statistics for tables with the `BIT` type cannot be loaded [#62289](https://github.com/pingcap/tidb/issues/62289) @[YangKeao](https://github.com/YangKeao) - - Fix the issue that statistics of `BIT` type columns fail to be loaded into memory [#59759](https://github.com/pingcap/tidb/issues/59759) @[YangKeao](https://github.com/YangKeao) + - Fix the issue that statistics for tables of the `BIT` type cannot be loaded [#62289](https://github.com/pingcap/tidb/issues/62289) @[YangKeao](https://github.com/YangKeao) + - Fix the issue that statistics for `BIT` type columns fail to be loaded into memory [#59759](https://github.com/pingcap/tidb/issues/59759) @[YangKeao](https://github.com/YangKeao) - Fix the issue that the `Close()` method of the Hash Join v1 operator fails to recover from a panic [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) - Fix the issue that sharing KV requests between the `Index Merge` and `Index Lookup` operators during query execution causes data races [#60175](https://github.com/pingcap/tidb/issues/60175) @[you06](https://github.com/you06) - Fix the issue that when the disk-spilling operation of an `ANALYZE` statement takes too long in extreme cases, other TiDB nodes might fail to update the latest statistics [#54552](https://github.com/pingcap/tidb/issues/54552) @[0xPoe](https://github.com/0xPoe) From fd2477dc16ca42425a2f6a2b47a48dd3def07d70 Mon Sep 17 00:00:00 2001 From: Aolin Date: Tue, 26 Aug 2025 11:58:29 +0800 Subject: [PATCH 17/27] add TiKV configuration items --- releases/release-7.5.7.md | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 048a732fc38d9..86d1a6b7a717f 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -13,9 +13,13 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- ## Compatibility changes - + -- Change the default value of `tidb_enable_historical_stats` from `ON` to `OFF`, which turns off historical statistics to avoid potential stability issues [#53048](https://github.com/pingcap/tidb/issues/53048) @[hawkingrei](https://github.com/hawkingrei) +- Change the default value of [`tidb_enable_historical_stats`](/system-variables.md#tidb_enable_historical_stats) from `ON` to `OFF`, which turns off historical statistics to avoid potential stability issues [#53048](https://github.com/pingcap/tidb/issues/53048) @[hawkingrei](https://github.com/hawkingrei) +- TiKV deprecates the following configuration items and replaces them with the new [`gc.auto-compaction`](/tikv-configuration-file.md#gc.auto-compaction) configuration group, which controls automatic compaction behavior: + + - Deprecated configuration items: [`region-compact-check-interval`](/tikv-configuration-file.md#region-compact-check-interval), [`region-compact-check-step`](/tikv-configuration-file.md#region-compact-check-step), [`region-compact-min-tombstones`](/tikv-configuration-file.md#region-compact-min-tombstones), [`region-compact-tombstones-percent`](/tikv-configuration-file.md#region-compact-tombstones-percent), [`region-compact-min-redundant-rows`](/tikv-configuration-file.md#region-compact-min-redundant-rows-new-in-v710), and [`region-compact-redundant-rows-percent`](/tikv-configuration-file.md#region-compact-redundant-rows-percent-new-in-v710). + - New configuration items: `gc.auto-compaction.check-interval`, `gc.auto-compaction.tombstone-num-threshold`, `gc.auto-compaction.tombstone-percent-threshold`, `gc.auto-compaction.redundant-rows-threshold`, `gc.auto-compaction.redundant-rows-percent-threshold`, and `gc.auto-compaction.bottommost-level-force`. ## Improvements From 90cffc91d402250c907affe532dc0d7ff56970d2 Mon Sep 17 00:00:00 2001 From: Grace Cai Date: Thu, 28 Aug 2025 14:09:53 +0800 Subject: [PATCH 18/27] add #18474 --- releases/release-7.5.7.md | 1 + 1 file changed, 1 insertion(+) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 86d1a6b7a717f..b17d662026009 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -151,6 +151,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + TiKV - note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) + - Fix the issue that a deadlock might be triggered during CPU profiling [#18474](https://github.com/tikv/tikv/issues/18474) @[YangKeao](https://github.com/YangKeao) - Fix the issue that Online Unsafe Recovery might be blocked by certain TiFlash replicas, preventing the commit index from advancing [18197](https://github.com/tikv/tikv/issues/18197) @[v01dstar](https://github.com/v01dstar) - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix the issue that TiKV might use a compression algorithm that the client cannot decode [#18079](https://github.com/tikv/tikv/issues/18079) @[ekexium](https://github.com/ekexium) - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix the issue that TiKV allows excessive SST ingest requests under high concurrency [#18452](https://github.com/tikv/tikv/issues/18452) @[hbisheng](https://github.com/hbisheng) From d72bb6e0930dee27f694bc059619cb4957ba27c6 Mon Sep 17 00:00:00 2001 From: Aolin Date: Thu, 28 Aug 2025 15:14:16 +0800 Subject: [PATCH 19/27] Apply suggestions from code review Co-authored-by: Grace Cai --- releases/release-7.5.7.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index b17d662026009..ecafe7bc32d88 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -15,7 +15,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- -- Change the default value of [`tidb_enable_historical_stats`](/system-variables.md#tidb_enable_historical_stats) from `ON` to `OFF`, which turns off historical statistics to avoid potential stability issues [#53048](https://github.com/pingcap/tidb/issues/53048) @[hawkingrei](https://github.com/hawkingrei) +- Change the default value of [`tidb_enable_historical_stats`](https://docs.pingcap.com/tidb/v7.5/system-variables/#tidb_enable_historical_stats) from `ON` to `OFF`, which turns off historical statistics to avoid potential stability issues [#53048](https://github.com/pingcap/tidb/issues/53048) @[hawkingrei](https://github.com/hawkingrei) - TiKV deprecates the following configuration items and replaces them with the new [`gc.auto-compaction`](/tikv-configuration-file.md#gc.auto-compaction) configuration group, which controls automatic compaction behavior: - Deprecated configuration items: [`region-compact-check-interval`](/tikv-configuration-file.md#region-compact-check-interval), [`region-compact-check-step`](/tikv-configuration-file.md#region-compact-check-step), [`region-compact-min-tombstones`](/tikv-configuration-file.md#region-compact-min-tombstones), [`region-compact-tombstones-percent`](/tikv-configuration-file.md#region-compact-tombstones-percent), [`region-compact-min-redundant-rows`](/tikv-configuration-file.md#region-compact-min-redundant-rows-new-in-v710), and [`region-compact-redundant-rows-percent`](/tikv-configuration-file.md#region-compact-redundant-rows-percent-new-in-v710). @@ -32,7 +32,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - (dup): release-8.5.3.md > Improvements> TiDB - Add a monitoring metric to observe the write speed to TiKV during index addition [#60925](https://github.com/pingcap/tidb/issues/60925) @[CbcWestwolf](https://github.com/CbcWestwolf) - Optimize the locking logic of DML during DDL execution to reduce lock conflicts between DML and DDL operations, improving DDL performance in some scenarios. However, due to the additional secondary index locking operations, DML performance might decrease slightly [#62337](https://github.com/pingcap/tidb/issues/62337) @[lcwangchao](https://github.com/lcwangchao) - Improve the behavior when the system variable `tidb_opt_ordering_index_selectivity_threshold` is set to `1`, enhancing the control capability of this variable [#60242](https://github.com/pingcap/tidb/issues/60242) @[time-and-fate](https://github.com/time-and-fate) - - Avoid refreshing statistics information across the entire cluster after `ANALYZE` statement execution, reducing the execution time of `ANALYZE` [#57631](https://github.com/pingcap/tidb/issues/57631) @[0xPoe](https://github.com/0xPoe) + - Avoid refreshing statistics across the entire cluster after `ANALYZE` statement execution, reducing the execution time of `ANALYZE` [#57631](https://github.com/pingcap/tidb/issues/57631) @[0xPoe](https://github.com/0xPoe) - Support constant folding for columns with `NOT NULL` constraints, folding `IS NULL` evaluations into `FALSE` [#62050](https://github.com/pingcap/tidb/issues/62050) @[hawkingrei](https://github.com/hawkingrei) - The optimizer supports constant propagation in more types of `JOIN` operations [#51700](https://github.com/pingcap/tidb/issues/51700) @[hawkingrei](https://github.com/hawkingrei) - Improve the performance of temporary index merging when extensive lock conflicts exist between DML and DDL operations [#61433](https://github.com/pingcap/tidb/issues/61433) @[tangenta](https://github.com/tangenta) From 1408fe029d8590c72b1fc5137f74f0cd35ac25fc Mon Sep 17 00:00:00 2001 From: Aolin Date: Tue, 2 Sep 2025 15:22:55 +0800 Subject: [PATCH 20/27] remove empty notes --- releases/release-7.5.7.md | 54 +-------------------------------------- 1 file changed, 1 insertion(+), 53 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index ecafe7bc32d88..6ae4d4e411e0f 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -16,7 +16,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - Change the default value of [`tidb_enable_historical_stats`](https://docs.pingcap.com/tidb/v7.5/system-variables/#tidb_enable_historical_stats) from `ON` to `OFF`, which turns off historical statistics to avoid potential stability issues [#53048](https://github.com/pingcap/tidb/issues/53048) @[hawkingrei](https://github.com/hawkingrei) -- TiKV deprecates the following configuration items and replaces them with the new [`gc.auto-compaction`](/tikv-configuration-file.md#gc.auto-compaction) configuration group, which controls automatic compaction behavior: +- TiKV deprecates the following configuration items and replaces them with the new [`gc.auto-compaction`](/tikv-configuration-file.md#gc.auto-compaction) configuration group, which controls automatic compaction behavior [#18727](https://github.com/tikv/tikv/issues/18727) @[v01dstar](https://github.com/v01dstar) - Deprecated configuration items: [`region-compact-check-interval`](/tikv-configuration-file.md#region-compact-check-interval), [`region-compact-check-step`](/tikv-configuration-file.md#region-compact-check-step), [`region-compact-min-tombstones`](/tikv-configuration-file.md#region-compact-min-tombstones), [`region-compact-tombstones-percent`](/tikv-configuration-file.md#region-compact-tombstones-percent), [`region-compact-min-redundant-rows`](/tikv-configuration-file.md#region-compact-min-redundant-rows-new-in-v710), and [`region-compact-redundant-rows-percent`](/tikv-configuration-file.md#region-compact-redundant-rows-percent-new-in-v710). - New configuration items: `gc.auto-compaction.check-interval`, `gc.auto-compaction.tombstone-num-threshold`, `gc.auto-compaction.tombstone-percent-threshold`, `gc.auto-compaction.redundant-rows-threshold`, `gc.auto-compaction.redundant-rows-percent-threshold`, and `gc.auto-compaction.bottommost-level-force`. @@ -25,8 +25,6 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + TiDB - - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - (dup): release-8.5.3.md > Improvements> TiDB - Add flow control interfaces for Region splitting and data ingestion during data import [#61553](https://github.com/pingcap/tidb/issues/61553) @[tangenta](https://github.com/tangenta) - (dup): release-8.2.0.md > Improvements> TiDB - Optimize the performance of obtaining data distribution information when performing simple queries on tables with large data volumes [#53850](https://github.com/pingcap/tidb/issues/53850) @[you06](https://github.com/you06) - (dup): release-8.5.3.md > Improvements> TiDB - Add a monitoring metric to observe the write speed to TiKV during index addition [#60925](https://github.com/pingcap/tidb/issues/60925) @[CbcWestwolf](https://github.com/CbcWestwolf) @@ -39,7 +37,6 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + TiKV - - note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - Optimize the trigger logic of TiKV compaction to process all data segments in order of reclamation efficiency, reducing the performance impact of MVCC redundant data [#18571](https://github.com/tikv/tikv/issues/18571) @[v01dstar](https://github.com/v01dstar) - Optimize the tail latency of async snapshot and write operations in environments with a large number of SST files [#18743](https://github.com/tikv/tikv/issues/18743) @[Connor1996](https://github.com/Connor1996) - (dup): release-8.1.2.md > Improvements> TiKV - Improve the speed of Region Merge in scenarios with empty tables and small Regions [#17376](https://github.com/tikv/tikv/issues/17376) @[LykxSassinator](https://github.com/LykxSassinator) @@ -62,8 +59,6 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + TiFlash - - note [#issue](https://github.com/pingcap/tiflash/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/pingcap/tiflash/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - (dup): release-8.5.3.md > Improvements> TiFlash - Enhance the observability for TiFlash OOM risks in wide table scenarios [#10272](https://github.com/pingcap/tiflash/issues/10272) @[JaySon-Huang](https://github.com/JaySon-Huang) - (dup): release-8.5.3.md > Improvements> TiFlash - Increase the maximum retry count when acquiring storage snapshots to improve query stability for large tables [#10300](https://github.com/pingcap/tiflash/issues/10300) @[JaySon-Huang](https://github.com/JaySon-Huang) - (dup): release-8.1.0.md > Improvements> TiFlash - Mitigate the issue that TiFlash might panic due to updating certificates after TLS is enabled [#8535](https://github.com/pingcap/tiflash/issues/8535) @[windtalker](https://github.com/windtalker) @@ -72,35 +67,9 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + Backup & Restore (BR) - - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - When deploying TiDB on Amazon EC2, BR supports AWS Instance Metadata Service Version 2 (IMDSv2). You can configure your EC2 instance to allow BR to use the IAM role associated with the instance for appropriate permissions to access Amazon S3 [#16443](https://github.com/tikv/tikv/issues/16443) @[pingyu](https://github.com/pingyu) - (dup): release-8.5.3.md > Improvements> Tools> Backup & Restore (BR) - The Download API of TiKV supports filtering out data within a certain time range when downloading backup files, which avoids importing outdated or future data versions during restore [#18399](https://github.com/tikv/tikv/issues/18399) @[3pointer](https://github.com/3pointer) - + TiCDC - - - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - + TiDB Data Migration (DM) - - - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - + TiDB Lightning - - - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - + Dumpling - - - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - + TiUP - - - note [#issue](https://github.com/pingcap/tiup/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/pingcap/tiup/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - ## Bug fixes + TiDB @@ -150,7 +119,6 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + TiKV - - note [#issue](https://github.com/tikv/tikv/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - Fix the issue that a deadlock might be triggered during CPU profiling [#18474](https://github.com/tikv/tikv/issues/18474) @[YangKeao](https://github.com/YangKeao) - Fix the issue that Online Unsafe Recovery might be blocked by certain TiFlash replicas, preventing the commit index from advancing [18197](https://github.com/tikv/tikv/issues/18197) @[v01dstar](https://github.com/v01dstar) - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix the issue that TiKV might use a compression algorithm that the client cannot decode [#18079](https://github.com/tikv/tikv/issues/18079) @[ekexium](https://github.com/ekexium) @@ -172,7 +140,6 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + TiFlash - - note [#issue](https://github.com/pingcap/tiflash/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - Fix the panic issue caused by accidental deletion of SST files during running `IMPORT INTO` or `BR restore` [#10141](https://github.com/pingcap/tiflash/issues/10141) @[CalvinNeo](https://github.com/CalvinNeo) - (dup): release-8.5.3.md > Bug fixes> TiFlash - Fix the issue that creating an expression index in the form of `((NULL))` causes TiFlash to panic [#9891](https://github.com/pingcap/tiflash/issues/9891) @[JaySon-Huang](https://github.com/JaySon-Huang) - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might panic when handling snapshots with irregular Region key-ranges [#10147](https://github.com/pingcap/tiflash/issues/10147) @[JaySon-Huang](https://github.com/JaySon-Huang) @@ -185,8 +152,6 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + Backup & Restore (BR) - - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - (dup): release-8.5.2.md > Bug fixes> Tools> Backup & Restore (BR) - Fix the issue that PITR fails to restore indexes larger than 3072 bytes [#58430](https://github.com/pingcap/tidb/issues/58430) @[YuJuncen](https://github.com/YuJuncen) - (dup): release-8.5.3.md > Bug fixes> Tools> Backup & Restore (BR) - Fix the issue that log backup uploads to Azure Blob Storage are slow when transferring large volumes of data [#18410](https://github.com/tikv/tikv/issues/18410) @[YuJuncen](https://github.com/YuJuncen) - (dup): release-8.5.3.md > Bug fixes> Tools> Backup & Restore (BR) - Fix the issue that BR does not check whether the corresponding table exists in the cluster when filtering tables with `-f` [#61592](https://github.com/pingcap/tidb/issues/61592) @[RidRisR](https://github.com/RidRisR) @@ -200,28 +165,11 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - (dup): release-8.5.3.md > Bug fixes> Tools> TiCDC - Fix the issue of case-sensitive matching for column and index names in the dispatcher configuration [#12103](https://github.com/pingcap/tiflow/issues/12103) @[wk989898](https://github.com/wk989898) - (dup): release-8.5.3.md > Bug fixes> Tools> TiCDC - Fix the issue that the resolved ts lag keeps increasing after scaling in or out TiKV nodes on the same IP address because of outdated store IDs [#12162](https://github.com/pingcap/tiflow/issues/12162) @[3AceShowHand](https://github.com/3AceShowHand) - + TiDB Data Migration (DM) - - - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/pingcap/tiflow/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - + TiDB Lightning - - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - (dup): release-8.5.2.md > Bug fixes> Tools> TiDB Lightning - Fix the issue that TiDB Lightning can get stuck for several hours when importing Parquet files from cloud storage into TiDB [#60224](https://github.com/pingcap/tidb/issues/60224) @[joechenrh](https://github.com/joechenrh) - (dup): release-8.5.3.md > 错误修复> Tools> TiDB Lightning - 修复 TiDB Lightning 向 TiKV 发起的 RPC 请求超时后返回 `context deadline exceeded` 的问题 [#61326](https://github.com/pingcap/tidb/issues/61326) @[OliverS929](https://github.com/OliverS929) - + Dumpling - - - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/pingcap/tidb/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - + TiUP - - - note [#issue](https://github.com/pingcap/tiup/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - - note [#issue](https://github.com/pingcap/tiup/issues/${issue-id}) @[贡献者 GitHub ID](https://github.com/${github-id}) - + NG Monitoring - (dup): release-8.5.2.md > Bug fixes> Tools> NG Monitoring - Fix the issue that TSDB consumes too much memory under high cardinality of time series data, and provide a memory configuration option for TSDB [#295](https://github.com/pingcap/ng-monitoring/issues/295) @[mornyx](https://github.com/mornyx) From fb776c98bffa6fd25f4f2e5bb89503042253134e Mon Sep 17 00:00:00 2001 From: Aolin Date: Tue, 2 Sep 2025 15:29:58 +0800 Subject: [PATCH 21/27] remove some issues fixed in 7.5.x earlier v7.5.7 --- releases/release-7.5.7.md | 1 - 1 file changed, 1 deletion(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 6ae4d4e411e0f..042687c2f87dd 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -61,7 +61,6 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - (dup): release-8.5.3.md > Improvements> TiFlash - Enhance the observability for TiFlash OOM risks in wide table scenarios [#10272](https://github.com/pingcap/tiflash/issues/10272) @[JaySon-Huang](https://github.com/JaySon-Huang) - (dup): release-8.5.3.md > Improvements> TiFlash - Increase the maximum retry count when acquiring storage snapshots to improve query stability for large tables [#10300](https://github.com/pingcap/tiflash/issues/10300) @[JaySon-Huang](https://github.com/JaySon-Huang) - - (dup): release-8.1.0.md > Improvements> TiFlash - Mitigate the issue that TiFlash might panic due to updating certificates after TLS is enabled [#8535](https://github.com/pingcap/tiflash/issues/8535) @[windtalker](https://github.com/windtalker) + Tools From 21ef5ffdac8ed322cda527464357b7c79b7dd36e Mon Sep 17 00:00:00 2001 From: Aolin Date: Tue, 2 Sep 2025 15:41:17 +0800 Subject: [PATCH 22/27] update TOC and release-timeline.md --- TOC.md | 1 + releases/release-7.5.7.md | 164 +++++++++++++++++------------------ releases/release-notes.md | 1 + releases/release-timeline.md | 1 + 4 files changed, 84 insertions(+), 83 deletions(-) diff --git a/TOC.md b/TOC.md index d726f6204a4d8..1c7756981b679 100644 --- a/TOC.md +++ b/TOC.md @@ -1112,6 +1112,7 @@ - v7.6 - [7.6.0-DMR](/releases/release-7.6.0.md) - v7.5 + - [7.5.7](/releases/release-7.5.7.md) - [7.5.6](/releases/release-7.5.6.md) - [7.5.5](/releases/release-7.5.5.md) - [7.5.4](/releases/release-7.5.4.md) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 042687c2f87dd..a4758f1b2fbba 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -5,7 +5,7 @@ summary: Learn about the compatibility changes, improvements, and bug fixes in T # TiDB 7.5.7 Release Notes -Release date: xx xx, 2025 +Release date: September 4, 2025 TiDB version: 7.5.7 @@ -13,8 +13,6 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- ## Compatibility changes - - - Change the default value of [`tidb_enable_historical_stats`](https://docs.pingcap.com/tidb/v7.5/system-variables/#tidb_enable_historical_stats) from `ON` to `OFF`, which turns off historical statistics to avoid potential stability issues [#53048](https://github.com/pingcap/tidb/issues/53048) @[hawkingrei](https://github.com/hawkingrei) - TiKV deprecates the following configuration items and replaces them with the new [`gc.auto-compaction`](/tikv-configuration-file.md#gc.auto-compaction) configuration group, which controls automatic compaction behavior [#18727](https://github.com/tikv/tikv/issues/18727) @[v01dstar](https://github.com/v01dstar) @@ -23,11 +21,11 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- ## Improvements -+ TiDB ++ TiDB - - (dup): release-8.5.3.md > Improvements> TiDB - Add flow control interfaces for Region splitting and data ingestion during data import [#61553](https://github.com/pingcap/tidb/issues/61553) @[tangenta](https://github.com/tangenta) - - (dup): release-8.2.0.md > Improvements> TiDB - Optimize the performance of obtaining data distribution information when performing simple queries on tables with large data volumes [#53850](https://github.com/pingcap/tidb/issues/53850) @[you06](https://github.com/you06) - - (dup): release-8.5.3.md > Improvements> TiDB - Add a monitoring metric to observe the write speed to TiKV during index addition [#60925](https://github.com/pingcap/tidb/issues/60925) @[CbcWestwolf](https://github.com/CbcWestwolf) + - Add flow control interfaces for Region splitting and data ingestion during data import [#61553](https://github.com/pingcap/tidb/issues/61553) @[tangenta](https://github.com/tangenta) + - Optimize the performance of obtaining data distribution information when performing simple queries on tables with large data volumes [#53850](https://github.com/pingcap/tidb/issues/53850) @[you06](https://github.com/you06) + - Add a monitoring metric to observe the write speed to TiKV during index addition [#60925](https://github.com/pingcap/tidb/issues/60925) @[CbcWestwolf](https://github.com/CbcWestwolf) - Optimize the locking logic of DML during DDL execution to reduce lock conflicts between DML and DDL operations, improving DDL performance in some scenarios. However, due to the additional secondary index locking operations, DML performance might decrease slightly [#62337](https://github.com/pingcap/tidb/issues/62337) @[lcwangchao](https://github.com/lcwangchao) - Improve the behavior when the system variable `tidb_opt_ordering_index_selectivity_threshold` is set to `1`, enhancing the control capability of this variable [#60242](https://github.com/pingcap/tidb/issues/60242) @[time-and-fate](https://github.com/time-and-fate) - Avoid refreshing statistics across the entire cluster after `ANALYZE` statement execution, reducing the execution time of `ANALYZE` [#57631](https://github.com/pingcap/tidb/issues/57631) @[0xPoe](https://github.com/0xPoe) @@ -35,61 +33,61 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - The optimizer supports constant propagation in more types of `JOIN` operations [#51700](https://github.com/pingcap/tidb/issues/51700) @[hawkingrei](https://github.com/hawkingrei) - Improve the performance of temporary index merging when extensive lock conflicts exist between DML and DDL operations [#61433](https://github.com/pingcap/tidb/issues/61433) @[tangenta](https://github.com/tangenta) -+ TiKV ++ TiKV - Optimize the trigger logic of TiKV compaction to process all data segments in order of reclamation efficiency, reducing the performance impact of MVCC redundant data [#18571](https://github.com/tikv/tikv/issues/18571) @[v01dstar](https://github.com/v01dstar) - Optimize the tail latency of async snapshot and write operations in environments with a large number of SST files [#18743](https://github.com/tikv/tikv/issues/18743) @[Connor1996](https://github.com/Connor1996) - - (dup): release-8.1.2.md > Improvements> TiKV - Improve the speed of Region Merge in scenarios with empty tables and small Regions [#17376](https://github.com/tikv/tikv/issues/17376) @[LykxSassinator](https://github.com/LykxSassinator) - - (dup): release-8.5.3.md > Improvements> TiKV - Optimize the handling of `CompactedEvent` in Raftstore by moving it to the `split-check` worker, reducing blocking on the main Raftstore thread [#18532](https://github.com/tikv/tikv/issues/18532) @[LykxSassinator](https://github.com/LykxSassinator) - - (dup): release-8.1.0.md > Improvements> TiKV - Add metrics for memory usage per thread [#15927](https://github.com/tikv/tikv/issues/15927) @[Connor1996](https://github.com/Connor1996) - - (dup): release-8.5.3.md > Improvements> TiKV - Log only `SST ingest is experiencing slowdowns` when SST ingest is too slow, and skip calling `get_sst_key_ranges` to avoid performance jitter [#18549](https://github.com/tikv/tikv/issues/18549) @[LykxSassinator](https://github.com/LykxSassinator) - - (dup): release-7.1.6.md > Improvements> TiKV - Optimize the jittery access delay when restarting TiKV due to waiting for the log to be applied, improving the stability of TiKV [#15874](https://github.com/tikv/tikv/issues/15874) @[LykxSassinator](https://github.com/LykxSassinator) - - (dup): release-8.5.3.md > Improvements> TiKV - Optimize the cleanup mechanism of residual data to mitigate the impact on request latency [#18107](https://github.com/tikv/tikv/issues/18107) @[LykxSassinator](https://github.com/LykxSassinator) - - (dup): release-8.5.3.md > Improvements> TiKV - Optimize the performance of `fetch_entries_to` in Raft Engine to reduce contention and improve performance under mixed workloads [#18605](https://github.com/tikv/tikv/issues/18605) @[LykxSassinator](https://github.com/LykxSassinator) - - (dup): release-8.4.0.md > Improvements> TiKV - Support dynamically modifying flow-control configurations for write operations [#17395](https://github.com/tikv/tikv/issues/17395) @[glorv](https://github.com/glorv) - - (dup): release-8.5.3.md > Improvements> TiKV - Support ingesting SST files without blocking foreground writes, reducing the impact of latency [#18081](https://github.com/tikv/tikv/issues/18081) @[hhwyt](https://github.com/hhwyt) - - (dup): release-8.5.3.md > Improvements> TiKV - Support ingesting SST files without blocking foreground writes, reducing the impact of latency [#18081](https://github.com/tikv/tikv/issues/18081) @[hhwyt](https://github.com/hhwyt) - - (dup): release-8.5.3.md > Improvements> TiKV - Optimize the detection mechanism for I/O jitter on KvDB disks when KvDB and RaftDB use separate mount paths [#18463](https://github.com/tikv/tikv/issues/18463) @[LykxSassinator](https://github.com/LykxSassinator) - - (dup): release-6.5.9.md > Improvements> TiKV - Add slow logs for peer and store messages [#16600](https://github.com/tikv/tikv/issues/16600) @[Connor1996](https://github.com/Connor1996) - -+ PD - - - (dup): release-8.5.3.md > Improvements> PD - Add GO runtime-related monitoring metrics in Prometheus [#8931](https://github.com/tikv/pd/issues/8931) @[bufferflies](https://github.com/bufferflies) + - Improve the speed of Region Merge in scenarios with empty tables and small Regions [#17376](https://github.com/tikv/tikv/issues/17376) @[LykxSassinator](https://github.com/LykxSassinator) + - Optimize the handling of `CompactedEvent` in Raftstore by moving it to the `split-check` worker, reducing blocking on the main Raftstore thread [#18532](https://github.com/tikv/tikv/issues/18532) @[LykxSassinator](https://github.com/LykxSassinator) + - Add metrics for memory usage per thread [#15927](https://github.com/tikv/tikv/issues/15927) @[Connor1996](https://github.com/Connor1996) + - Log only `SST ingest is experiencing slowdowns` when SST ingest is too slow, and skip calling `get_sst_key_ranges` to avoid performance jitter [#18549](https://github.com/tikv/tikv/issues/18549) @[LykxSassinator](https://github.com/LykxSassinator) + - Optimize the jittery access delay when restarting TiKV due to waiting for the log to be applied, improving the stability of TiKV [#15874](https://github.com/tikv/tikv/issues/15874) @[LykxSassinator](https://github.com/LykxSassinator) + - Optimize the cleanup mechanism of residual data to mitigate the impact on request latency [#18107](https://github.com/tikv/tikv/issues/18107) @[LykxSassinator](https://github.com/LykxSassinator) + - Optimize the performance of `fetch_entries_to` in Raft Engine to reduce contention and improve performance under mixed workloads [#18605](https://github.com/tikv/tikv/issues/18605) @[LykxSassinator](https://github.com/LykxSassinator) + - Support dynamically modifying flow-control configurations for write operations [#17395](https://github.com/tikv/tikv/issues/17395) @[glorv](https://github.com/glorv) + - Support ingesting SST files without blocking foreground writes, reducing the impact of latency [#18081](https://github.com/tikv/tikv/issues/18081) @[hhwyt](https://github.com/hhwyt) + - Support ingesting SST files without blocking foreground writes, reducing the impact of latency [#18081](https://github.com/tikv/tikv/issues/18081) @[hhwyt](https://github.com/hhwyt) + - Optimize the detection mechanism for I/O jitter on KvDB disks when KvDB and RaftDB use separate mount paths [#18463](https://github.com/tikv/tikv/issues/18463) @[LykxSassinator](https://github.com/LykxSassinator) + - Add slow logs for peer and store messages [#16600](https://github.com/tikv/tikv/issues/16600) @[Connor1996](https://github.com/Connor1996) + ++ PD + + - Add GO runtime-related monitoring metrics in Prometheus [#8931](https://github.com/tikv/pd/issues/8931) @[bufferflies](https://github.com/bufferflies) - Reduce unnecessary error logs [#9370](https://github.com/tikv/pd/issues/9370) @[bufferflies](https://github.com/bufferflies) + TiFlash - - (dup): release-8.5.3.md > Improvements> TiFlash - Enhance the observability for TiFlash OOM risks in wide table scenarios [#10272](https://github.com/pingcap/tiflash/issues/10272) @[JaySon-Huang](https://github.com/JaySon-Huang) - - (dup): release-8.5.3.md > Improvements> TiFlash - Increase the maximum retry count when acquiring storage snapshots to improve query stability for large tables [#10300](https://github.com/pingcap/tiflash/issues/10300) @[JaySon-Huang](https://github.com/JaySon-Huang) + - Enhance the observability for TiFlash OOM risks in wide table scenarios [#10272](https://github.com/pingcap/tiflash/issues/10272) @[JaySon-Huang](https://github.com/JaySon-Huang) + - Increase the maximum retry count when acquiring storage snapshots to improve query stability for large tables [#10300](https://github.com/pingcap/tiflash/issues/10300) @[JaySon-Huang](https://github.com/JaySon-Huang) + Tools - + Backup & Restore (BR) + + Backup & Restore (BR) - When deploying TiDB on Amazon EC2, BR supports AWS Instance Metadata Service Version 2 (IMDSv2). You can configure your EC2 instance to allow BR to use the IAM role associated with the instance for appropriate permissions to access Amazon S3 [#16443](https://github.com/tikv/tikv/issues/16443) @[pingyu](https://github.com/pingyu) - - (dup): release-8.5.3.md > Improvements> Tools> Backup & Restore (BR) - The Download API of TiKV supports filtering out data within a certain time range when downloading backup files, which avoids importing outdated or future data versions during restore [#18399](https://github.com/tikv/tikv/issues/18399) @[3pointer](https://github.com/3pointer) + - The Download API of TiKV supports filtering out data within a certain time range when downloading backup files, which avoids importing outdated or future data versions during restore [#18399](https://github.com/tikv/tikv/issues/18399) @[3pointer](https://github.com/3pointer) ## Bug fixes -+ TiDB - - - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that shared KV requests in `IndexMerge` and `IndexLookUp` operators cause data races when pushing down queries [#60175](https://github.com/pingcap/tidb/issues/60175) @[you06](https://github.com/you06) - - (dup): release-9.0.0.md > Bug fixes> TiDB - Fix a potential goroutine leak issue in the Hash Aggregation operator [#58004](https://github.com/pingcap/tidb/issues/58004) @[xzhangxian1008](https://github.com/xzhangxian1008) - - (dup): release-7.6.0.md > Bug fixes> TiDB - Fix the issue that MPP plans might not be selected when indexes on generated columns are set as visible [#47766](https://github.com/pingcap/tidb/issues/47766) @[AilinKid](https://github.com/AilinKid) - - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that SQL statements containing `_charset(xxx), _charset(xxx2), ...` generate different digests [#58447](https://github.com/pingcap/tidb/issues/58447) @[xhebox](https://github.com/xhebox) - - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that frequent Region merges prevent TTL jobs from starting [#61512](https://github.com/pingcap/tidb/issues/61512) @[YangKeao](https://github.com/YangKeao) - - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that TiFlash query results are inconsistent after executing a lossy DDL statement [#61455](https://github.com/pingcap/tidb/issues/61455) @[Lloyd-Pottiger](https://github.com/Lloyd-Pottiger) - - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue of incorrect key range in `ALTER RANGE meta SET PLACEMENT POLICY` [#60888](https://github.com/pingcap/tidb/issues/60888) @[nolouch](https://github.com/nolouch) - - (dup): release-8.5.2.md > Bug fixes> TiDB - Fix the issue that the data in the **Stats Healthy Distribution** panel of Grafana might be incorrect [#57176](https://github.com/pingcap/tidb/issues/57176) @[hawkingrei](https://github.com/hawkingrei) - - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that the comparison behavior of `latin1_bin` differs from that of `utf8mb4_bin` and `utf8_bin` [#60701](https://github.com/pingcap/tidb/issues/60701) @[hawkingrei](https://github.com/hawkingrei) - - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that after disabling metadata locking (MDL), DDL operations get stuck after failing to update the schema version [#61210](https://github.com/pingcap/tidb/issues/61210) @[wjhuang2016](https://github.com/wjhuang2016) - - (dup): release-8.5.2.md > Bug fixes> TiDB - Fix the issue that enabling Redact log does not take effect in certain scenarios [#59279](https://github.com/pingcap/tidb/issues/59279) @[tangenta](https://github.com/tangenta) - - (dup): release-9.0.0.md > Bug fixes> TiDB - Fix the issue that a TiDB session might crash when Fix Control #44855 is enabled [#59762](https://github.com/pingcap/tidb/issues/59762) @[winoros](https://github.com/winoros) - - (dup): release-8.5.3.md > Improvements> TiDB - Remove redundant log entries when the `IndexLookup` operator encounters a `context canceled` error [#61072](https://github.com/pingcap/tidb/issues/61072) @[yibin87](https://github.com/yibin87) - - (dup): release-8.5.2.md > Bug fixes> TiDB - Fix the issue that improper exception handling for statistics causes in-memory statistics to be mistakenly deleted when background tasks time out [#57901](https://github.com/pingcap/tidb/issues/57901) @[hawkingrei](https://github.com/hawkingrei) - - (dup): release-8.5.2.md > Bug fixes> TiDB - Fix the issue that executing `ADD UNIQUE INDEX` might cause data inconsistency [#60339](https://github.com/pingcap/tidb/issues/60339) @[tangenta](https://github.com/tangenta) - - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that non-public indexes are shown in the statistics system table [#60430](https://github.com/pingcap/tidb/issues/60430) @[tangenta](https://github.com/tangenta) - - (dup): release-8.5.3.md > Bug fixes> TiDB - Fix the issue that the HashJoin operator causes Goroutine leaks due to memory overuse [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) ++ TiDB + + - Fix the issue that shared KV requests in `IndexMerge` and `IndexLookUp` operators cause data races when pushing down queries [#60175](https://github.com/pingcap/tidb/issues/60175) @[you06](https://github.com/you06) + - Fix a potential goroutine leak issue in the Hash Aggregation operator [#58004](https://github.com/pingcap/tidb/issues/58004) @[xzhangxian1008](https://github.com/xzhangxian1008) + - Fix the issue that MPP plans might not be selected when indexes on generated columns are set as visible [#47766](https://github.com/pingcap/tidb/issues/47766) @[AilinKid](https://github.com/AilinKid) + - Fix the issue that SQL statements containing `_charset(xxx), _charset(xxx2), ...` generate different digests [#58447](https://github.com/pingcap/tidb/issues/58447) @[xhebox](https://github.com/xhebox) + - Fix the issue that frequent Region merges prevent TTL jobs from starting [#61512](https://github.com/pingcap/tidb/issues/61512) @[YangKeao](https://github.com/YangKeao) + - Fix the issue that TiFlash query results are inconsistent after executing a lossy DDL statement [#61455](https://github.com/pingcap/tidb/issues/61455) @[Lloyd-Pottiger](https://github.com/Lloyd-Pottiger) + - Fix the issue of incorrect key range in `ALTER RANGE meta SET PLACEMENT POLICY` [#60888](https://github.com/pingcap/tidb/issues/60888) @[nolouch](https://github.com/nolouch) + - Fix the issue that the data in the **Stats Healthy Distribution** panel of Grafana might be incorrect [#57176](https://github.com/pingcap/tidb/issues/57176) @[hawkingrei](https://github.com/hawkingrei) + - Fix the issue that the comparison behavior of `latin1_bin` differs from that of `utf8mb4_bin` and `utf8_bin` [#60701](https://github.com/pingcap/tidb/issues/60701) @[hawkingrei](https://github.com/hawkingrei) + - Fix the issue that after disabling metadata locking (MDL), DDL operations get stuck after failing to update the schema version [#61210](https://github.com/pingcap/tidb/issues/61210) @[wjhuang2016](https://github.com/wjhuang2016) + - Fix the issue that enabling Redact log does not take effect in certain scenarios [#59279](https://github.com/pingcap/tidb/issues/59279) @[tangenta](https://github.com/tangenta) + - Fix the issue that a TiDB session might crash when Fix Control #44855 is enabled [#59762](https://github.com/pingcap/tidb/issues/59762) @[winoros](https://github.com/winoros) + - Remove redundant log entries when the `IndexLookup` operator encounters a `context canceled` error [#61072](https://github.com/pingcap/tidb/issues/61072) @[yibin87](https://github.com/yibin87) + - Fix the issue that improper exception handling for statistics causes in-memory statistics to be mistakenly deleted when background tasks time out [#57901](https://github.com/pingcap/tidb/issues/57901) @[hawkingrei](https://github.com/hawkingrei) + - Fix the issue that executing `ADD UNIQUE INDEX` might cause data inconsistency [#60339](https://github.com/pingcap/tidb/issues/60339) @[tangenta](https://github.com/tangenta) + - Fix the issue that non-public indexes are shown in the statistics system table [#60430](https://github.com/pingcap/tidb/issues/60430) @[tangenta](https://github.com/tangenta) + - Fix the issue that the HashJoin operator causes Goroutine leaks due to memory overuse [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) - Fix the issue that shallow copy of `PhysicalExchangeSender.HashCol` causes TiFlash to crash or generate incorrect results [#60517](https://github.com/pingcap/tidb/issues/60517) @[windtalker](https://github.com/windtalker) - Fix the issue that the `IndexLookUp` operator prints useless logs when a query is canceled [#61072](https://github.com/pingcap/tidb/issues/61072) @[yibin87](https://github.com/yibin87) - Fix the issue that the `Aggregation` operator causes Goroutine leaks when memory overflows [#58004](https://github.com/pingcap/tidb/issues/58004) @[xzhangxian1008](https://github.com/xzhangxian1008) @@ -101,7 +99,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - Fix the issue that when the collected column statistics are all in TopN, the row count estimation might remain 0 even after subsequent writes [#47400](https://github.com/pingcap/tidb/issues/47400) @[terry1purcell](https://github.com/terry1purcell) - Fix the issue that the estimated cost displayed in `explain format="cost_trace"` might be incorrect [#61155](https://github.com/pingcap/tidb/issues/61155) @[hawkingrei](https://github.com/hawkingrei) - Fix the issue that the cost formulas displayed in `explain format="cost_trace"` might contain empty parentheses [#61127](https://github.com/pingcap/tidb/issues/61127) @[hawkingrei](https://github.com/hawkingrei) - - Fix the issue that circular foreign key definitions cause infinite loops [#60985](https://github.com/pingcap/tidb/issues/60985) @[hawkingrei](https://github.com/hawkingrei) + - Fix the issue that circular foreign key definitions cause infinite loops [#60985](https://github.com/pingcap/tidb/issues/60985) @[hawkingrei](https://github.com/hawkingrei) - Fix the issue that internal queries might fail to construct index range queries properly when using `NULL` [#62196](https://github.com/pingcap/tidb/issues/62196) @[hawkingrei](https://github.com/hawkingrei) - Fix the issue that Plan Cache stores an incorrect execution plan, causing execution errors [#56772](https://github.com/pingcap/tidb/issues/56772) @[dash12653](https://github.com/dash12653) - Fix the issue that row count estimates across months or years can be significantly overestimated [#50080](https://github.com/pingcap/tidb/issues/50080) @[terry1purcell](https://github.com/terry1purcell) @@ -116,59 +114,59 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - Fix the issue that `ADMIN CHECK` still returns success even after some internal SQL executions fail [#61612](https://github.com/pingcap/tidb/issues/61612) @[joechenrh](https://github.com/joechenrh) - Fix the issue that data and indexes became inconsistent after adding multiple indexes through multi-schema change [#61255](https://github.com/pingcap/tidb/issues/61255) @[tangenta](https://github.com/tangenta) -+ TiKV ++ TiKV - Fix the issue that a deadlock might be triggered during CPU profiling [#18474](https://github.com/tikv/tikv/issues/18474) @[YangKeao](https://github.com/YangKeao) - Fix the issue that Online Unsafe Recovery might be blocked by certain TiFlash replicas, preventing the commit index from advancing [18197](https://github.com/tikv/tikv/issues/18197) @[v01dstar](https://github.com/v01dstar) - - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix the issue that TiKV might use a compression algorithm that the client cannot decode [#18079](https://github.com/tikv/tikv/issues/18079) @[ekexium](https://github.com/ekexium) - - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix the issue that TiKV allows excessive SST ingest requests under high concurrency [#18452](https://github.com/tikv/tikv/issues/18452) @[hbisheng](https://github.com/hbisheng) - - (dup): release-8.3.0.md > Bug fixes> TiKV - Fix the issue that `Ingestion picked level` and `Compaction Job Size(files)` are displayed incorrectly in the TiKV dashboard in Grafana [#15990](https://github.com/tikv/tikv/issues/15990) @[Connor1996](https://github.com/Connor1996) - - (dup): release-9.0.0.md > Bug fixes> TiKV - Fix the issue that the unexpected `Server is busy` error occurs after TiKV restarts [#18233](https://github.com/tikv/tikv/issues/18233) @[LykxSassinator](https://github.com/LykxSassinator) - - (dup): release-6.5.9.md > Bug fixes> TiKV - Fix the issue that TiKV converts the time zone incorrectly for Brazil and Egypt [#16220](https://github.com/tikv/tikv/issues/16220) @[overvenus](https://github.com/overvenus) - - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix misleading descriptions in `StoreMsg` log entries in slow logs [#18561](https://github.com/tikv/tikv/issues/18561) @[LykxSassinator](https://github.com/LykxSassinator) - - (dup): release-9.0.0.md > Bug fixes> TiKV - Fix incorrect thread memory metrics [#18125](https://github.com/tikv/tikv/issues/18125) @[Connor1996](https://github.com/Connor1996) - - (dup): release-8.5.3.md > Bug fixes> TiKV - Fix the issue that TiKV fails to terminate ongoing manual compaction tasks during graceful shutdown [#18396](https://github.com/tikv/tikv/issues/18396) @[LykxSassinator](https://github.com/LykxSassinator) - -+ PD - - - (dup): release-8.3.0.md > Bug fixes> PD - Fix the issue that the `split-merge-interval` configuration item might not take effect when you modify its value repeatedly (such as changing it from `1s` to `1h` and back to `1s`) [#8404](https://github.com/tikv/pd/issues/8404) @[lhy1024](https://github.com/lhy1024) - - (dup): release-8.5.2.md > Bug fixes> PD - Fix the issue that the default value of `lease` is not correctly set [#9156](https://github.com/tikv/pd/issues/9156) @[rleungx](https://github.com/rleungx) - - (dup): release-8.5.3.md > Bug fixes> PD Fix the issue that improperly closing TiDB Dashboard TCP connections could lead to PD goroutine leaks [#9402](https://github.com/tikv/pd/issues/9402) @[baurine](https://github.com/baurine) - - (dup): release-8.5.3.md > Bug fixes> PD - Fix the issue that newly added TiKV nodes might fail to be scheduled [#9145](https://github.com/tikv/pd/issues/9145) @[bufferflies](https://github.com/bufferflies) + - Fix the issue that TiKV might use a compression algorithm that the client cannot decode [#18079](https://github.com/tikv/tikv/issues/18079) @[ekexium](https://github.com/ekexium) + - Fix the issue that TiKV allows excessive SST ingest requests under high concurrency [#18452](https://github.com/tikv/tikv/issues/18452) @[hbisheng](https://github.com/hbisheng) + - Fix the issue that `Ingestion picked level` and `Compaction Job Size(files)` are displayed incorrectly in the TiKV dashboard in Grafana [#15990](https://github.com/tikv/tikv/issues/15990) @[Connor1996](https://github.com/Connor1996) + - Fix the issue that the unexpected `Server is busy` error occurs after TiKV restarts [#18233](https://github.com/tikv/tikv/issues/18233) @[LykxSassinator](https://github.com/LykxSassinator) + - Fix the issue that TiKV converts the time zone incorrectly for Brazil and Egypt [#16220](https://github.com/tikv/tikv/issues/16220) @[overvenus](https://github.com/overvenus) + - Fix misleading descriptions in `StoreMsg` log entries in slow logs [#18561](https://github.com/tikv/tikv/issues/18561) @[LykxSassinator](https://github.com/LykxSassinator) + - Fix incorrect thread memory metrics [#18125](https://github.com/tikv/tikv/issues/18125) @[Connor1996](https://github.com/Connor1996) + - Fix the issue that TiKV fails to terminate ongoing manual compaction tasks during graceful shutdown [#18396](https://github.com/tikv/tikv/issues/18396) @[LykxSassinator](https://github.com/LykxSassinator) + ++ PD + + - Fix the issue that the `split-merge-interval` configuration item might not take effect when you modify its value repeatedly (such as changing it from `1s` to `1h` and back to `1s`) [#8404](https://github.com/tikv/pd/issues/8404) @[lhy1024](https://github.com/lhy1024) + - Fix the issue that the default value of `lease` is not correctly set [#9156](https://github.com/tikv/pd/issues/9156) @[rleungx](https://github.com/rleungx) + - Fix the issue that improperly closing TiDB Dashboard TCP connections could lead to PD goroutine leaks [#9402](https://github.com/tikv/pd/issues/9402) @[baurine](https://github.com/baurine) + - Fix the issue that newly added TiKV nodes might fail to be scheduled [#9145](https://github.com/tikv/pd/issues/9145) @[bufferflies](https://github.com/bufferflies) - Fix the issue that enabling `tidb_enable_tso_follower_proxy` might cause the TSO service to become unavailable [#9188](https://github.com/tikv/pd/issues/9188) @[Tema](https://github.com/Tema) -+ TiFlash ++ TiFlash - Fix the panic issue caused by accidental deletion of SST files during running `IMPORT INTO` or `BR restore` [#10141](https://github.com/pingcap/tiflash/issues/10141) @[CalvinNeo](https://github.com/CalvinNeo) - - (dup): release-8.5.3.md > Bug fixes> TiFlash - Fix the issue that creating an expression index in the form of `((NULL))` causes TiFlash to panic [#9891](https://github.com/pingcap/tiflash/issues/9891) @[JaySon-Huang](https://github.com/JaySon-Huang) - - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might panic when handling snapshots with irregular Region key-ranges [#10147](https://github.com/pingcap/tiflash/issues/10147) @[JaySon-Huang](https://github.com/JaySon-Huang) - - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might consume a large amount of memory when tables in a cluster contain a large number of `ENUM` type columns [#9947](https://github.com/pingcap/tiflash/issues/9947) @[JaySon-Huang](https://github.com/JaySon-Huang) - - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might fail to restart after inserting a single row of data larger than 16 MiB [#10052](https://github.com/pingcap/tiflash/issues/10052) @[JaySon-Huang](https://github.com/JaySon-Huang) - - (dup): release-8.5.3.md > Bug fixes> TiFlash - Fix the issue that missing resource control low token signals lead to query throttling [#10137](https://github.com/pingcap/tiflash/issues/10137) @[guo-shaoge](https://github.com/guo-shaoge) - - (dup): release-8.5.2.md > Bug fixes> TiFlash - Fix the issue that TiFlash might return the `Exception: Block schema mismatch` error when executing SQL statements containing `GROUP BY ... WITH ROLLUP` [#10110](https://github.com/pingcap/tiflash/issues/10110) @[gengliqi](https://github.com/gengliqi) + - Fix the issue that creating an expression index in the form of `((NULL))` causes TiFlash to panic [#9891](https://github.com/pingcap/tiflash/issues/9891) @[JaySon-Huang](https://github.com/JaySon-Huang) + - Fix the issue that TiFlash might panic when handling snapshots with irregular Region key-ranges [#10147](https://github.com/pingcap/tiflash/issues/10147) @[JaySon-Huang](https://github.com/JaySon-Huang) + - Fix the issue that TiFlash might consume a large amount of memory when tables in a cluster contain a large number of `ENUM` type columns [#9947](https://github.com/pingcap/tiflash/issues/9947) @[JaySon-Huang](https://github.com/JaySon-Huang) + - Fix the issue that TiFlash might fail to restart after inserting a single row of data larger than 16 MiB [#10052](https://github.com/pingcap/tiflash/issues/10052) @[JaySon-Huang](https://github.com/JaySon-Huang) + - Fix the issue that missing resource control low token signals lead to query throttling [#10137](https://github.com/pingcap/tiflash/issues/10137) @[guo-shaoge](https://github.com/guo-shaoge) + - Fix the issue that TiFlash might return the `Exception: Block schema mismatch` error when executing SQL statements containing `GROUP BY ... WITH ROLLUP` [#10110](https://github.com/pingcap/tiflash/issues/10110) @[gengliqi](https://github.com/gengliqi) + Tools + Backup & Restore (BR) - - (dup): release-8.5.2.md > Bug fixes> Tools> Backup & Restore (BR) - Fix the issue that PITR fails to restore indexes larger than 3072 bytes [#58430](https://github.com/pingcap/tidb/issues/58430) @[YuJuncen](https://github.com/YuJuncen) - - (dup): release-8.5.3.md > Bug fixes> Tools> Backup & Restore (BR) - Fix the issue that log backup uploads to Azure Blob Storage are slow when transferring large volumes of data [#18410](https://github.com/tikv/tikv/issues/18410) @[YuJuncen](https://github.com/YuJuncen) - - (dup): release-8.5.3.md > Bug fixes> Tools> Backup & Restore (BR) - Fix the issue that BR does not check whether the corresponding table exists in the cluster when filtering tables with `-f` [#61592](https://github.com/pingcap/tidb/issues/61592) @[RidRisR](https://github.com/RidRisR) + - Fix the issue that PITR fails to restore indexes larger than 3072 bytes [#58430](https://github.com/pingcap/tidb/issues/58430) @[YuJuncen](https://github.com/YuJuncen) + - Fix the issue that log backup uploads to Azure Blob Storage are slow when transferring large volumes of data [#18410](https://github.com/tikv/tikv/issues/18410) @[YuJuncen](https://github.com/YuJuncen) + - Fix the issue that BR does not check whether the corresponding table exists in the cluster when filtering tables with `-f` [#61592](https://github.com/pingcap/tidb/issues/61592) @[RidRisR](https://github.com/RidRisR) - + TiCDC + + TiCDC - Fix the issue that the changefeed might get stuck when using external storage as the downstream [#9162](https://github.com/pingcap/tiflow/issues/9162) @[asddongmen](https://github.com/asddongmen) - - (dup): release-8.5.2.md > Bug fixes> Tools> TiCDC - Fix the issue that the changefeed might get stuck after the replication traffic exceeds the traffic threshold of the downstream Kafka [#12110](https://github.com/pingcap/tiflow/issues/12110) @[3AceShowHand](https://github.com/3AceShowHand) - - (dup): release-6.5.12.md > Bug fixes> Tools> TiCDC - Fix the issue that using the `--overwrite-checkpoint-ts` parameter in the `changefeed pause` command might cause the changefeed to be stuck [#12055](https://github.com/pingcap/tiflow/issues/12055) @[hongyunyan](https://github.com/hongyunyan) - - (dup): release-8.5.3.md > Bug fixes> Tools> TiCDC - Fix the issue that evaluating event filter expressions on tables containing virtual columns might cause a panic [#12206](https://github.com/pingcap/tiflow/issues/12206) @[lidezhu](https://github.com/lidezhu) - - (dup): release-8.5.3.md > Bug fixes> Tools> TiCDC - Fix the issue of case-sensitive matching for column and index names in the dispatcher configuration [#12103](https://github.com/pingcap/tiflow/issues/12103) @[wk989898](https://github.com/wk989898) - - (dup): release-8.5.3.md > Bug fixes> Tools> TiCDC - Fix the issue that the resolved ts lag keeps increasing after scaling in or out TiKV nodes on the same IP address because of outdated store IDs [#12162](https://github.com/pingcap/tiflow/issues/12162) @[3AceShowHand](https://github.com/3AceShowHand) + - Fix the issue that the changefeed might get stuck after the replication traffic exceeds the traffic threshold of the downstream Kafka [#12110](https://github.com/pingcap/tiflow/issues/12110) @[3AceShowHand](https://github.com/3AceShowHand) + - Fix the issue that using the `--overwrite-checkpoint-ts` parameter in the `changefeed pause` command might cause the changefeed to be stuck [#12055](https://github.com/pingcap/tiflow/issues/12055) @[hongyunyan](https://github.com/hongyunyan) + - Fix the issue that evaluating event filter expressions on tables containing virtual columns might cause a panic [#12206](https://github.com/pingcap/tiflow/issues/12206) @[lidezhu](https://github.com/lidezhu) + - Fix the issue of case-sensitive matching for column and index names in the dispatcher configuration [#12103](https://github.com/pingcap/tiflow/issues/12103) @[wk989898](https://github.com/wk989898) + - Fix the issue that the resolved ts lag keeps increasing after scaling in or out TiKV nodes on the same IP address because of outdated store IDs [#12162](https://github.com/pingcap/tiflow/issues/12162) @[3AceShowHand](https://github.com/3AceShowHand) + TiDB Lightning - - (dup): release-8.5.2.md > Bug fixes> Tools> TiDB Lightning - Fix the issue that TiDB Lightning can get stuck for several hours when importing Parquet files from cloud storage into TiDB [#60224](https://github.com/pingcap/tidb/issues/60224) @[joechenrh](https://github.com/joechenrh) - - (dup): release-8.5.3.md > 错误修复> Tools> TiDB Lightning - 修复 TiDB Lightning 向 TiKV 发起的 RPC 请求超时后返回 `context deadline exceeded` 的问题 [#61326](https://github.com/pingcap/tidb/issues/61326) @[OliverS929](https://github.com/OliverS929) + - Fix the issue that TiDB Lightning can get stuck for several hours when importing Parquet files from cloud storage into TiDB [#60224](https://github.com/pingcap/tidb/issues/60224) @[joechenrh](https://github.com/joechenrh) + - Fix the issue that TiDB Lightning returns the `context deadline exceeded` error when the RPC request to TiKV times out [#61326](https://github.com/pingcap/tidb/issues/61326) @[OliverS929](https://github.com/OliverS929) + NG Monitoring - - (dup): release-8.5.2.md > Bug fixes> Tools> NG Monitoring - Fix the issue that TSDB consumes too much memory under high cardinality of time series data, and provide a memory configuration option for TSDB [#295](https://github.com/pingcap/ng-monitoring/issues/295) @[mornyx](https://github.com/mornyx) + - Fix the issue that TSDB consumes too much memory under high cardinality of time series data, and provide a memory configuration option for TSDB [#295](https://github.com/pingcap/ng-monitoring/issues/295) @[mornyx](https://github.com/mornyx) diff --git a/releases/release-notes.md b/releases/release-notes.md index e562cbac55f2b..95defd213cd3c 100644 --- a/releases/release-notes.md +++ b/releases/release-notes.md @@ -46,6 +46,7 @@ To learn about the support timelines for Long-Term Support (LTS) versions of TiD ## 7.5 +- [7.5.7](/releases/release-7.5.7.md): 2025-09-04 - [7.5.6](/releases/release-7.5.6.md): 2025-03-14 - [7.5.5](/releases/release-7.5.5.md): 2024-12-31 - [7.5.4](/releases/release-7.5.4.md): 2024-10-15 diff --git a/releases/release-timeline.md b/releases/release-timeline.md index 368ea2d15ee50..0c008cb2f9cd1 100644 --- a/releases/release-timeline.md +++ b/releases/release-timeline.md @@ -13,6 +13,7 @@ To learn about the support timelines for Long-Term Support (LTS) versions of TiD | Version | Release Date | | :--- | :--- | +| [7.5.7](/releases/release-7.5.7.md) | 2025-09-04 | | [8.5.3](/releases/release-8.5.3.md) | 2025-08-14 | | [8.5.2](/releases/release-8.5.2.md) | 2025-06-12 | | [7.5.6](/releases/release-7.5.6.md) | 2025-03-14 | From d9a6a7eb43af3ab11f5b00abf6391f98025a9581 Mon Sep 17 00:00:00 2001 From: Aolin Date: Tue, 2 Sep 2025 16:30:28 +0800 Subject: [PATCH 23/27] update links --- releases/release-7.5.7.md | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index a4758f1b2fbba..278ec55718300 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -14,10 +14,10 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- ## Compatibility changes - Change the default value of [`tidb_enable_historical_stats`](https://docs.pingcap.com/tidb/v7.5/system-variables/#tidb_enable_historical_stats) from `ON` to `OFF`, which turns off historical statistics to avoid potential stability issues [#53048](https://github.com/pingcap/tidb/issues/53048) @[hawkingrei](https://github.com/hawkingrei) -- TiKV deprecates the following configuration items and replaces them with the new [`gc.auto-compaction`](/tikv-configuration-file.md#gc.auto-compaction) configuration group, which controls automatic compaction behavior [#18727](https://github.com/tikv/tikv/issues/18727) @[v01dstar](https://github.com/v01dstar) +- TiKV deprecates the following configuration items and replaces them with the new [`gc.auto-compaction`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#gc.auto-compaction) configuration group, which controls automatic compaction behavior [#18727](https://github.com/tikv/tikv/issues/18727) @[v01dstar](https://github.com/v01dstar) - - Deprecated configuration items: [`region-compact-check-interval`](/tikv-configuration-file.md#region-compact-check-interval), [`region-compact-check-step`](/tikv-configuration-file.md#region-compact-check-step), [`region-compact-min-tombstones`](/tikv-configuration-file.md#region-compact-min-tombstones), [`region-compact-tombstones-percent`](/tikv-configuration-file.md#region-compact-tombstones-percent), [`region-compact-min-redundant-rows`](/tikv-configuration-file.md#region-compact-min-redundant-rows-new-in-v710), and [`region-compact-redundant-rows-percent`](/tikv-configuration-file.md#region-compact-redundant-rows-percent-new-in-v710). - - New configuration items: `gc.auto-compaction.check-interval`, `gc.auto-compaction.tombstone-num-threshold`, `gc.auto-compaction.tombstone-percent-threshold`, `gc.auto-compaction.redundant-rows-threshold`, `gc.auto-compaction.redundant-rows-percent-threshold`, and `gc.auto-compaction.bottommost-level-force`. + - Deprecated configuration items: [`region-compact-check-interval`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#region-compact-check-interval), [`region-compact-check-step`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#region-compact-check-step), [`region-compact-min-tombstones`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#region-compact-min-tombstones), [`region-compact-tombstones-percent`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#region-compact-tombstones-percent), [`region-compact-min-redundant-rows`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#region-compact-min-redundant-rows-new-in-v710), and [`region-compact-redundant-rows-percent`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#region-compact-redundant-rows-percent-new-in-v710). + - New configuration items: [`gc.auto-compaction.check-interval`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#check-interval-new-in-v757), [`gc.auto-compaction.tombstone-num-threshold`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#tombstone-num-threshold-new-in-v757), [`gc.auto-compaction.tombstone-percent-threshold`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#tombstone-percent-threshold-new-in-v757), [`gc.auto-compaction.redundant-rows-threshold`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#redundant-rows-threshold-new-in-v757), [`gc.auto-compaction.redundant-rows-percent-threshold`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#redundant-rows-percent-threshold-new-in-v757), and [`gc.auto-compaction.bottommost-level-force`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#bottommost-level-force-new-in-v757). ## Improvements From 0e6c07f13c07642b83571ace44fcd175f1eba64a Mon Sep 17 00:00:00 2001 From: Aolin Date: Wed, 3 Sep 2025 14:13:30 +0800 Subject: [PATCH 24/27] Apply suggestions from code review Co-authored-by: xixirangrang --- releases/release-7.5.7.md | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 278ec55718300..c49ec8bb3fc7f 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -27,7 +27,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - Optimize the performance of obtaining data distribution information when performing simple queries on tables with large data volumes [#53850](https://github.com/pingcap/tidb/issues/53850) @[you06](https://github.com/you06) - Add a monitoring metric to observe the write speed to TiKV during index addition [#60925](https://github.com/pingcap/tidb/issues/60925) @[CbcWestwolf](https://github.com/CbcWestwolf) - Optimize the locking logic of DML during DDL execution to reduce lock conflicts between DML and DDL operations, improving DDL performance in some scenarios. However, due to the additional secondary index locking operations, DML performance might decrease slightly [#62337](https://github.com/pingcap/tidb/issues/62337) @[lcwangchao](https://github.com/lcwangchao) - - Improve the behavior when the system variable `tidb_opt_ordering_index_selectivity_threshold` is set to `1`, enhancing the control capability of this variable [#60242](https://github.com/pingcap/tidb/issues/60242) @[time-and-fate](https://github.com/time-and-fate) + - Improve the behavior when the system variable [`tidb_opt_ordering_index_selectivity_threshold`](/system-variables.md#tidb_opt_ordering_index_selectivity_threshold-new-in-v700) is set to `1`, enhancing the control capability of this variable [#60242](https://github.com/pingcap/tidb/issues/60242) @[time-and-fate](https://github.com/time-and-fate) - Avoid refreshing statistics across the entire cluster after `ANALYZE` statement execution, reducing the execution time of `ANALYZE` [#57631](https://github.com/pingcap/tidb/issues/57631) @[0xPoe](https://github.com/0xPoe) - Support constant folding for columns with `NOT NULL` constraints, folding `IS NULL` evaluations into `FALSE` [#62050](https://github.com/pingcap/tidb/issues/62050) @[hawkingrei](https://github.com/hawkingrei) - The optimizer supports constant propagation in more types of `JOIN` operations [#51700](https://github.com/pingcap/tidb/issues/51700) @[hawkingrei](https://github.com/hawkingrei) @@ -46,7 +46,6 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - Optimize the performance of `fetch_entries_to` in Raft Engine to reduce contention and improve performance under mixed workloads [#18605](https://github.com/tikv/tikv/issues/18605) @[LykxSassinator](https://github.com/LykxSassinator) - Support dynamically modifying flow-control configurations for write operations [#17395](https://github.com/tikv/tikv/issues/17395) @[glorv](https://github.com/glorv) - Support ingesting SST files without blocking foreground writes, reducing the impact of latency [#18081](https://github.com/tikv/tikv/issues/18081) @[hhwyt](https://github.com/hhwyt) - - Support ingesting SST files without blocking foreground writes, reducing the impact of latency [#18081](https://github.com/tikv/tikv/issues/18081) @[hhwyt](https://github.com/hhwyt) - Optimize the detection mechanism for I/O jitter on KvDB disks when KvDB and RaftDB use separate mount paths [#18463](https://github.com/tikv/tikv/issues/18463) @[LykxSassinator](https://github.com/LykxSassinator) - Add slow logs for peer and store messages [#16600](https://github.com/tikv/tikv/issues/16600) @[Connor1996](https://github.com/Connor1996) @@ -87,10 +86,10 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - Fix the issue that improper exception handling for statistics causes in-memory statistics to be mistakenly deleted when background tasks time out [#57901](https://github.com/pingcap/tidb/issues/57901) @[hawkingrei](https://github.com/hawkingrei) - Fix the issue that executing `ADD UNIQUE INDEX` might cause data inconsistency [#60339](https://github.com/pingcap/tidb/issues/60339) @[tangenta](https://github.com/tangenta) - Fix the issue that non-public indexes are shown in the statistics system table [#60430](https://github.com/pingcap/tidb/issues/60430) @[tangenta](https://github.com/tangenta) - - Fix the issue that the HashJoin operator causes Goroutine leaks due to memory overuse [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) + - Fix the issue that the HashJoin operator causes goroutine leaks due to memory overuse [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) - Fix the issue that shallow copy of `PhysicalExchangeSender.HashCol` causes TiFlash to crash or generate incorrect results [#60517](https://github.com/pingcap/tidb/issues/60517) @[windtalker](https://github.com/windtalker) - Fix the issue that the `IndexLookUp` operator prints useless logs when a query is canceled [#61072](https://github.com/pingcap/tidb/issues/61072) @[yibin87](https://github.com/yibin87) - - Fix the issue that the `Aggregation` operator causes Goroutine leaks when memory overflows [#58004](https://github.com/pingcap/tidb/issues/58004) @[xzhangxian1008](https://github.com/xzhangxian1008) + - Fix the issue that the `Aggregation` operator causes goroutine leaks when memory overflows [#58004](https://github.com/pingcap/tidb/issues/58004) @[xzhangxian1008](https://github.com/xzhangxian1008) - Fix the issue that statistics for tables of the `BIT` type cannot be loaded [#62289](https://github.com/pingcap/tidb/issues/62289) @[YangKeao](https://github.com/YangKeao) - Fix the issue that statistics for `BIT` type columns fail to be loaded into memory [#59759](https://github.com/pingcap/tidb/issues/59759) @[YangKeao](https://github.com/YangKeao) - Fix the issue that the `Close()` method of the Hash Join v1 operator fails to recover from a panic [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) From 4425472c4ada09958bc9258ef65851c893983920 Mon Sep 17 00:00:00 2001 From: Aolin Date: Thu, 4 Sep 2025 10:29:44 +0800 Subject: [PATCH 25/27] Apply suggestions from code review Co-authored-by: Grace Cai --- releases/release-7.5.7.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index c49ec8bb3fc7f..cb083c3fe032d 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -108,7 +108,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - Fix the issue that row count estimation for `JOIN` can be highly inaccurate when column or index statistics are missing [#61602](https://github.com/pingcap/tidb/issues/61602) @[qw4990](https://github.com/qw4990) - Fix the issue that the default value of the system variable `tidb_cost_model_version` is set incorrectly [#61565](https://github.com/pingcap/tidb/issues/61565) @[hawkingrei](https://github.com/hawkingrei) - Fix the issue that statistics might be incorrect when the first column of a table is a virtual generated column [#61606](https://github.com/pingcap/tidb/issues/61606) @[winoros](https://github.com/winoros) - - Fix the issue that Plan Cache is incorrectly skipped with predicate simplification[#61513](https://github.com/pingcap/tidb/issues/61513) @[hawkingrei](https://github.com/hawkingrei) + - Fix the issue that Plan Cache is incorrectly skipped with predicate simplification [#61513](https://github.com/pingcap/tidb/issues/61513) @[hawkingrei](https://github.com/hawkingrei) - Fix the issue that executing `ADMIN CANCEL DDL JOBS` while adding an index causes the index-adding process to hang [#61087](https://github.com/pingcap/tidb/issues/61087) @[tangenta](https://github.com/tangenta) - Fix the issue that `ADMIN CHECK` still returns success even after some internal SQL executions fail [#61612](https://github.com/pingcap/tidb/issues/61612) @[joechenrh](https://github.com/joechenrh) - Fix the issue that data and indexes became inconsistent after adding multiple indexes through multi-schema change [#61255](https://github.com/pingcap/tidb/issues/61255) @[tangenta](https://github.com/tangenta) @@ -116,7 +116,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- + TiKV - Fix the issue that a deadlock might be triggered during CPU profiling [#18474](https://github.com/tikv/tikv/issues/18474) @[YangKeao](https://github.com/YangKeao) - - Fix the issue that Online Unsafe Recovery might be blocked by certain TiFlash replicas, preventing the commit index from advancing [18197](https://github.com/tikv/tikv/issues/18197) @[v01dstar](https://github.com/v01dstar) + - Fix the issue that Online Unsafe Recovery might be blocked by certain TiFlash replicas, preventing the commit index from advancing [#18197](https://github.com/tikv/tikv/issues/18197) @[v01dstar](https://github.com/v01dstar) - Fix the issue that TiKV might use a compression algorithm that the client cannot decode [#18079](https://github.com/tikv/tikv/issues/18079) @[ekexium](https://github.com/ekexium) - Fix the issue that TiKV allows excessive SST ingest requests under high concurrency [#18452](https://github.com/tikv/tikv/issues/18452) @[hbisheng](https://github.com/hbisheng) - Fix the issue that `Ingestion picked level` and `Compaction Job Size(files)` are displayed incorrectly in the TiKV dashboard in Grafana [#15990](https://github.com/tikv/tikv/issues/15990) @[Connor1996](https://github.com/Connor1996) From 4449b4d89de419d81d240b407a066f4bd32ce6af Mon Sep 17 00:00:00 2001 From: Aolin Date: Thu, 4 Sep 2025 10:41:55 +0800 Subject: [PATCH 26/27] remove dup notes --- releases/release-7.5.7.md | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index cb083c3fe032d..52a9a3c4e0fec 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -86,14 +86,10 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- - Fix the issue that improper exception handling for statistics causes in-memory statistics to be mistakenly deleted when background tasks time out [#57901](https://github.com/pingcap/tidb/issues/57901) @[hawkingrei](https://github.com/hawkingrei) - Fix the issue that executing `ADD UNIQUE INDEX` might cause data inconsistency [#60339](https://github.com/pingcap/tidb/issues/60339) @[tangenta](https://github.com/tangenta) - Fix the issue that non-public indexes are shown in the statistics system table [#60430](https://github.com/pingcap/tidb/issues/60430) @[tangenta](https://github.com/tangenta) - - Fix the issue that the HashJoin operator causes goroutine leaks due to memory overuse [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) + - Fix the issue that the `Close()` method of the Hash Join v1 operator fails to recover from a panic [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) - Fix the issue that shallow copy of `PhysicalExchangeSender.HashCol` causes TiFlash to crash or generate incorrect results [#60517](https://github.com/pingcap/tidb/issues/60517) @[windtalker](https://github.com/windtalker) - - Fix the issue that the `IndexLookUp` operator prints useless logs when a query is canceled [#61072](https://github.com/pingcap/tidb/issues/61072) @[yibin87](https://github.com/yibin87) - - Fix the issue that the `Aggregation` operator causes goroutine leaks when memory overflows [#58004](https://github.com/pingcap/tidb/issues/58004) @[xzhangxian1008](https://github.com/xzhangxian1008) - Fix the issue that statistics for tables of the `BIT` type cannot be loaded [#62289](https://github.com/pingcap/tidb/issues/62289) @[YangKeao](https://github.com/YangKeao) - Fix the issue that statistics for `BIT` type columns fail to be loaded into memory [#59759](https://github.com/pingcap/tidb/issues/59759) @[YangKeao](https://github.com/YangKeao) - - Fix the issue that the `Close()` method of the Hash Join v1 operator fails to recover from a panic [#60926](https://github.com/pingcap/tidb/issues/60926) @[xzhangxian1008](https://github.com/xzhangxian1008) - - Fix the issue that sharing KV requests between the `Index Merge` and `Index Lookup` operators during query execution causes data races [#60175](https://github.com/pingcap/tidb/issues/60175) @[you06](https://github.com/you06) - Fix the issue that when the disk-spilling operation of an `ANALYZE` statement takes too long in extreme cases, other TiDB nodes might fail to update the latest statistics [#54552](https://github.com/pingcap/tidb/issues/54552) @[0xPoe](https://github.com/0xPoe) - Fix the issue that when the collected column statistics are all in TopN, the row count estimation might remain 0 even after subsequent writes [#47400](https://github.com/pingcap/tidb/issues/47400) @[terry1purcell](https://github.com/terry1purcell) - Fix the issue that the estimated cost displayed in `explain format="cost_trace"` might be incorrect [#61155](https://github.com/pingcap/tidb/issues/61155) @[hawkingrei](https://github.com/hawkingrei) From 3e74f11660de3dd245b00503d8f02167a1021a4d Mon Sep 17 00:00:00 2001 From: Aolin Date: Thu, 4 Sep 2025 14:20:41 +0800 Subject: [PATCH 27/27] fix link --- releases/release-7.5.7.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/releases/release-7.5.7.md b/releases/release-7.5.7.md index 52a9a3c4e0fec..1846ee9617fb6 100644 --- a/releases/release-7.5.7.md +++ b/releases/release-7.5.7.md @@ -14,7 +14,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.5/quick-start-with- ## Compatibility changes - Change the default value of [`tidb_enable_historical_stats`](https://docs.pingcap.com/tidb/v7.5/system-variables/#tidb_enable_historical_stats) from `ON` to `OFF`, which turns off historical statistics to avoid potential stability issues [#53048](https://github.com/pingcap/tidb/issues/53048) @[hawkingrei](https://github.com/hawkingrei) -- TiKV deprecates the following configuration items and replaces them with the new [`gc.auto-compaction`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#gc.auto-compaction) configuration group, which controls automatic compaction behavior [#18727](https://github.com/tikv/tikv/issues/18727) @[v01dstar](https://github.com/v01dstar) +- TiKV deprecates the following configuration items and replaces them with the new [`gc.auto-compaction`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file/#gcauto-compaction) configuration group, which controls automatic compaction behavior [#18727](https://github.com/tikv/tikv/issues/18727) @[v01dstar](https://github.com/v01dstar) - Deprecated configuration items: [`region-compact-check-interval`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#region-compact-check-interval), [`region-compact-check-step`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#region-compact-check-step), [`region-compact-min-tombstones`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#region-compact-min-tombstones), [`region-compact-tombstones-percent`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#region-compact-tombstones-percent), [`region-compact-min-redundant-rows`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#region-compact-min-redundant-rows-new-in-v710), and [`region-compact-redundant-rows-percent`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#region-compact-redundant-rows-percent-new-in-v710). - New configuration items: [`gc.auto-compaction.check-interval`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#check-interval-new-in-v757), [`gc.auto-compaction.tombstone-num-threshold`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#tombstone-num-threshold-new-in-v757), [`gc.auto-compaction.tombstone-percent-threshold`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#tombstone-percent-threshold-new-in-v757), [`gc.auto-compaction.redundant-rows-threshold`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#redundant-rows-threshold-new-in-v757), [`gc.auto-compaction.redundant-rows-percent-threshold`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#redundant-rows-percent-threshold-new-in-v757), and [`gc.auto-compaction.bottommost-level-force`](https://docs.pingcap.com/tidb/v7.5/tikv-configuration-file#bottommost-level-force-new-in-v757).