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Posted to issues@flink.apache.org by "Weihua Hu (Jira)" <ji...@apache.org> on 2023/04/19 09:45:00 UTC
[jira] [Updated] (FLINK-31842) calculate task executor's utilization only in EvenlySpreadOutLocationPreferenceSlotSelectionStrategy
[ https://issues.apache.org/jira/browse/FLINK-31842?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Weihua Hu updated FLINK-31842:
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Summary: calculate task executor's utilization only in EvenlySpreadOutLocationPreferenceSlotSelectionStrategy (was: calculate task executor's utilization only when used)
> calculate task executor's utilization only in EvenlySpreadOutLocationPreferenceSlotSelectionStrategy
> ----------------------------------------------------------------------------------------------------
>
> Key: FLINK-31842
> URL: https://issues.apache.org/jira/browse/FLINK-31842
> Project: Flink
> Issue Type: Sub-task
> Components: Runtime / Coordination
> Reporter: Weihua Hu
> Priority: Major
> Labels: pull-request-available
>
> 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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