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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2413) capacity scheduler will overallocate vcores
Date Wed, 13 Aug 2014 00:00:17 GMT

    [ https://issues.apache.org/jira/browse/YARN-2413?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14094922#comment-14094922
] 

Allen Wittenauer commented on YARN-2413:
----------------------------------------

>From an operations perspective, this is not expected behavior at all.  Worse,  it appears
the only place this is documented is truly documented is in capacity-scheduler.xml .

> capacity scheduler will overallocate vcores
> -------------------------------------------
>
>                 Key: YARN-2413
>                 URL: https://issues.apache.org/jira/browse/YARN-2413
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: scheduler
>    Affects Versions: 3.0.0, 2.2.0
>            Reporter: Allen Wittenauer
>            Priority: Critical
>
> It doesn't appear that the capacity scheduler is properly allocating vcores when making
scheduling decisions, which may result in overallocation of CPU resources.



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