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Posted to issues@flink.apache.org by "Weihua Hu (Jira)" <ji...@apache.org> on 2023/04/18 12:10:00 UTC

[jira] [Created] (FLINK-31842) calculate task executor's utilization only when used

Weihua Hu created FLINK-31842:
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             Summary: calculate task executor's utilization only when used
                 Key: FLINK-31842
                 URL: https://issues.apache.org/jira/browse/FLINK-31842
             Project: Flink
          Issue Type: Sub-task
          Components: Runtime / Coordination
            Reporter: Weihua Hu


Currently DefaultAllocatedSlotPool#getFreeSlotsInformation always calculates the taskExecutorUtilization. This causes task schedules to be too slow when there are lots of slots, such as 20000 slots total. But only the EvenlySpreadOutLocationPreferenceSlotSelectionStrategy uses this utilization.

So I would like to move the calculation of taskExecutorUtilization to usage. DefaultAllocatedSlotPool provides a function: getTaskExecutorUtilization, and is only used in EvenlySpreadOutLocationPreferenceSlotSelectionStrategy.



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