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https://issues.apache.org/jira/browse/FLINK-30707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17677584#comment-17677584
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Zhu Zhu commented on FLINK-30707:
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Thanks for the proposal! [~xiasun]
I have assigned you the ticket.
> Let speculative execution takes 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
>
> 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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