[jira] [Closed] (FLINK-30707) Let speculative execution take input data amount into account when detecting slow tasks

["Zhu Zhu (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-30707?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zhu Zhu closed FLINK-30707.
---------------------------
    Fix Version/s: 1.17.0
       Resolution: Done

Done via
02b09eac6238fe059b6cb0ddbe791b761962dd14

> Let speculative execution take input data amount into account when detecting slow tasks
> ---------------------------------------------------------------------------------------
>
>                 Key: FLINK-30707
>                 URL: https://issues.apache.org/jira/browse/FLINK-30707
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Coordination
>    Affects Versions: 1.17.0
>            Reporter: xingbe
>            Assignee: xingbe
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.17.0
>
>
> The default slowTaskDetector in speculative execution is based on execution time now, if the data amount allocated to each subtask is uneven, time-based slow task detection may not reflect the actual performance of the subtask. Therefore, it is necessary to take the input information into account when detecting slow tasks.
> The major changes are:
>  * Need to know the amount of data processed by each execution vertex.
>  * ExecutionTimeBasedSlowTaskDetector needs to introduce the amount of input data to weight it with execution time.



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