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Posted to issues@flink.apache.org by "Lijie Wang (Jira)" <ji...@apache.org> on 2023/04/19 16:48:00 UTC

[jira] [Assigned] (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 ]

Lijie Wang reassigned FLINK-31842:
----------------------------------

    Assignee: Weihua Hu

> 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
>            Assignee: 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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