[jira] [Commented] (SPARK-3577) Add task metric to report spill time

["Ming Chen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-3577?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14578240#comment-14578240 ] 

Ming Chen commented on SPARK-3577:
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Why have not the metric been added? I think this is rather important, it may affect the results of the research work on this :  https://kayousterhout.github.io/trace-analysis/

> Add task metric to report spill time
> ------------------------------------
>
>                 Key: SPARK-3577
>                 URL: https://issues.apache.org/jira/browse/SPARK-3577
>             Project: Spark
>          Issue Type: Bug
>          Components: Shuffle, Spark Core
>    Affects Versions: 1.1.0
>            Reporter: Kay Ousterhout
>            Assignee: Sandy Ryza
>            Priority: Minor
>
> The {{ExternalSorter}} passes its own {{ShuffleWriteMetrics}} into {{ExternalSorter}}.  The write time recorded in those metrics is never used.  We should probably add task metrics to report this spill time, since for shuffles, this would have previously been reported as part of shuffle write time (with the original hash-based sorter).



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