raftstore: fix failing to restart after tikv OOM crash #9
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* use flushed last applied index in gc Signed-off-by: qi.xu <tonxuqi@outlook.com>
Add a new config: server.max_snapshot_file_raw_size (size before compression) to limit the write amplification in big region scenario. For scenarios when older version TiKv co-exists (like rolling upgrade), it will rely on feature gate and still use single snapshot file for backward compatibility. Signed-off-by: tonyxuqqi <tonyxuqi@outlook.com>
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Signed-off-by: qi.xu tonxuqi@outlook.com
What problem does this PR solve?
Problem Summary:
TiKV may fail to restart after crash because GC may delete data that has not been synced to disk when disable_kv_wal is true.
What is changed and how it works?
Proposal:
What's Changed:
When GC, try to read the truncated index from SST directly to figure out the last index.
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