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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3547) FairScheduler: Apps that have no resource demand should not participate scheduling
Date Wed, 27 May 2015 23:00:25 GMT

    [ https://issues.apache.org/jira/browse/YARN-3547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14561924#comment-14561924
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Karthik Kambatla commented on YARN-3547:
----------------------------------------

Sorry for the delay in response here. I am okay with using SchedulerApplicationAttempt.getAppAttemptResourceUsage().getPending().
I don't anticipate any issues due to potential mismatch between this value and getDemand -
getResourceUsage. We can always fix them if we run into them.

> FairScheduler: Apps that have no resource demand should not participate scheduling
> ----------------------------------------------------------------------------------
>
>                 Key: YARN-3547
>                 URL: https://issues.apache.org/jira/browse/YARN-3547
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: fairscheduler
>            Reporter: Xianyin Xin
>            Assignee: Xianyin Xin
>         Attachments: YARN-3547.001.patch, YARN-3547.002.patch, YARN-3547.003.patch, YARN-3547.004.patch,
YARN-3547.005.patch
>
>
> At present, all of the 'running' apps participate the scheduling process, however, most
of them may have no resource demand on a production cluster, as the app's status is running
other than waiting for resource at the most of the app's lifetime. It's not a wise way we
sort all the 'running' apps and try to fulfill them, especially on a large-scale cluster which
has heavy scheduling load. 



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