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https://issues.apache.org/jira/browse/YARN-6406?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15969670#comment-15969670
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Hadoop QA commented on YARN-6406:
---------------------------------
(!) A patch to the testing environment has been detected.
Re-executing against the patched versions to perform further tests.
The console is at
https://builds.apache.org/job/PreCommit-YARN-Build/15648/console in case of
problems.
> Remove SchedulerRequestKeys when no more pending ResourceRequest
> ----------------------------------------------------------------
>
> Key: YARN-6406
> URL: https://issues.apache.org/jira/browse/YARN-6406
> Project: Hadoop YARN
> Issue Type: Improvement
> Affects Versions: 2.8.0, 2.7.3, 3.0.0-alpha2
> Reporter: Arun Suresh
> Assignee: Arun Suresh
> Fix For: 3.0.0-alpha3
>
> Attachments: YARN-6406.001.patch, YARN-6406.002.patch,
> YARN-6406-branch-2.001.patch, YARN-6406-branch-2.002.patch
>
>
> YARN-5540 introduced some optimizations to remove satisfied SchedulerKeys
> from the AppScheduleingInfo. It looks like after YARN-6040,
> ScedulerRequestKeys are removed only if the Application sends a 0
> numContainers requests. While earlier, the outstanding schedulerKeys were
> also remove as soon as a container is allocated as well.
> An additional optimization we were hoping to include is to remove the
> ResourceRequests itself once the numContainers == 0, since we see in our
> clusters that the RM heap space consumption increases drastically due to a
> large number of ResourceRequests with 0 num containers.
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