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From "Craig Welch (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3632) Ordering policy should be allowed to reorder an application when demand changes
Date Fri, 22 May 2015 20:56:17 GMT

    [ https://issues.apache.org/jira/browse/YARN-3632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14556814#comment-14556814
] 

Craig Welch commented on YARN-3632:
-----------------------------------

bq. {code} if (application.updateResourceRequests(ask)) { } {code}

No, I want to avoid any possible interleaving of locks between the application and the queue,
getting the ordering policy locks the queue briefly and this should not happen inside an application
lock.

bq. {code} updateDemandForQueue {code}

The demand is being updated for that queue, I think the naming is clear enough.



> Ordering policy should be allowed to reorder an application when demand changes
> -------------------------------------------------------------------------------
>
>                 Key: YARN-3632
>                 URL: https://issues.apache.org/jira/browse/YARN-3632
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: capacityscheduler
>            Reporter: Craig Welch
>            Assignee: Craig Welch
>         Attachments: YARN-3632.0.patch, YARN-3632.1.patch, YARN-3632.3.patch, YARN-3632.4.patch,
YARN-3632.5.patch, YARN-3632.6.patch, YARN-3632.7.patch
>
>
> At present, ordering policies have the option to have an application re-ordered (for
allocation and preemption) when it is allocated to or a container is recovered from the application.
 Some ordering policies may also need to reorder when demand changes if that is part of the
ordering comparison, this needs to be made available (and used by the fairorderingpolicy when
sizebasedweight is true)



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