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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6406) Remove SchedulerRequestKeys when no more pending ResourceRequest
Date Fri, 14 Apr 2017 23:28:41 GMT

    [ https://issues.apache.org/jira/browse/YARN-6406?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15969670#comment-15969670
] 

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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