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https://issues.apache.org/jira/browse/MAPREDUCE-6394?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14643829#comment-14643829
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Ray Chiang commented on MAPREDUCE-6394:
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Thanks again. I'll update the tests.
And I was assuming for now that doing setCounters would always override any
setting by setRawCounters--preserving legacy behavior. I'll update the tests
to cover that as well.
> Speed up Task processing loop in HsTasksBlock#render()
> ------------------------------------------------------
>
> Key: MAPREDUCE-6394
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6394
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Components: jobhistoryserver
> Affects Versions: 2.7.0
> Reporter: Ray Chiang
> Assignee: Ray Chiang
> Labels: supportability
> Attachments: MAPREDUCE-6394.001.patch, MAPREDUCE-6394.002.patch,
> MAPREDUCE-6394.003.patch, MAPREDUCE-6394.004.patch, MAPREDUCE-6394.005.patch,
> MAPREDUCE-6394.006.patch, MAPREDUCE-6394.007.patch
>
>
> In HsTasksBlock#render(), there is a loop to create a Javascript table which
> slows down immensely on jobs with a large number of tasks (200k or more).
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