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In high concurrency scenarios, the CPU usage of the Flink cluster was reduced by 20% with no performance degradation in QPS by using proper retry strategy configuration.


Baseline(128 Concurrency)Experiment(128 Concurrency)
Retry StrategyDEFAULT_RETRY_MILLIS=100 msOptimized retry strategy

Join QPS

47

48

JM CPU
Usage AVG

17.3

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Image Added

14.5
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Image Added

TM CPU
Usage AVG

9.0

7.2

Changed Public Interfaces

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