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https://issues.apache.org/jira/browse/YARN-5889?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15856489#comment-15856489
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Wangda Tan commented on YARN-5889:
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[~eepayne], [~sunilg],
I would rather prefer to backport this patch once we have user-limit preemption
support. This is just a refactoring patch with minor behavior changes, it
should be backport once we get whole feature ready (intra-queue preemption for
user limit). We can discuss more once we get that stage.
> Improve user-limit calculation in capacity scheduler
> ----------------------------------------------------
>
> Key: YARN-5889
> URL: https://issues.apache.org/jira/browse/YARN-5889
> Project: Hadoop YARN
> Issue Type: Bug
> Components: capacity scheduler
> Reporter: Sunil G
> Assignee: Sunil G
> Attachments: YARN-5889.0001.patch,
> YARN-5889.0001.suggested.patchnotes, YARN-5889.0002.patch,
> YARN-5889.0003.patch, YARN-5889.0004.patch, YARN-5889.0005.patch,
> YARN-5889.0006.patch, YARN-5889.0007.patch, YARN-5889.0008.patch,
> YARN-5889.0009.patch, YARN-5889.0010.patch, YARN-5889.v0.patch,
> YARN-5889.v1.patch, YARN-5889.v2.patch
>
>
> Currently user-limit is computed during every heartbeat allocation cycle with
> a write lock. To improve performance, this tickets is focussing on moving
> user-limit calculation out of heartbeat allocation flow.
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