Add updateGlobalMetric methods#154
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| public static synchronized void updateGlobalMetrics() { | ||
| FlinkMetricContainer container = GLOBAL_FLINK_METRIC_CONTAINER.get(); | ||
| if (container == null) { | ||
| LOG.warn("Cannot update global metrics: FlinkMetricContainer reference not set"); |
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Yes, it is possible, since we use dedicated thread to updateGlobalMetircs, and setGlobalMetrics is inited in a different thread. It is possible that the gloableMetrics is not inited and then we call updateGlobalMetircs
| * update metrics concurrently, which could lead to incorrect metric values or duplicate metric | ||
| * registrations in Flink's metrics system. | ||
| */ | ||
| public static synchronized void updateGlobalMetrics() { |
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can updateGlobalMetrics get called before setGlobalMetrics?
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Yes, it is possible, since we use dedicated thread to updateGlobalMetircs, and setGlobalMetrics is inited in a different thread. It is possible that the gloableMetrics is not inited and then we call updateGlobalMetircs
| } | ||
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| try { | ||
| container.updateMetrics(GLOBAL_CONTAINER_STEP_NAME); |
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where does container.updateMetrics gets called in the current implementation?
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It will be called at beam-runner library. Will share you PR.
| private static final Logger LOG = LoggerFactory.getLogger(GlobalMetricsUtils.class); | ||
| private static final String GLOBAL_CONTAINER_STEP_NAME = "GLOBAL_METRICS"; | ||
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| // Maintain a reference to the FlinkMetricContainer for updating global metrics |
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can we add more context on why this is needed?
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Summary:
These changes enable the periodic publishing of global metrics from non-main threads (async callbacks, background tasks) to Flink's metrics system. The updateGlobalMetrics() method is the key addition that allows a background timer to push accumulated metrics to Flink at regular intervals.
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