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From "Chen He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1582) Capacity Scheduler: add a maximum-allocation-mb setting per queue
Date Thu, 10 Apr 2014 20:20:15 GMT

    [ https://issues.apache.org/jira/browse/YARN-1582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13965799#comment-13965799

Chen He commented on YARN-1582:

+1, patch looks good to me. 

> Capacity Scheduler: add a maximum-allocation-mb setting per queue 
> ------------------------------------------------------------------
>                 Key: YARN-1582
>                 URL: https://issues.apache.org/jira/browse/YARN-1582
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: capacityscheduler
>    Affects Versions: 3.0.0, 0.23.10, 2.2.0
>            Reporter: Thomas Graves
>            Assignee: Thomas Graves
>         Attachments: YARN-1582-branch-0.23.patch
> We want to allow certain queues to use larger container sizes while limiting other queues
to smaller container sizes.  Setting it per queue will help prevent abuse, help limit the
impact of reservations, and allow changes in the maximum container size to be rolled out more
> One reason this is needed is more application types are becoming available on yarn and
certain applications require more memory to run efficiently. While we want to allow for that
we don't want other applications to abuse that and start requesting bigger containers then
what they really need.  
> Note that we could have this based on application type, but that might not be totally
accurate either since for example you might want to allow certain users on MapReduce to use
larger containers, while limiting other users of MapReduce to smaller containers.

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