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From "Eric Payne (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2004) Priority scheduling support in Capacity scheduler
Date Tue, 28 Apr 2015 18:05:07 GMT

    [ https://issues.apache.org/jira/browse/YARN-2004?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14517545#comment-14517545
] 

Eric Payne commented on YARN-2004:
----------------------------------

[~sunilg],
bq. Hope you understood my comment about priority config across queue. Pls let me know your
thoughts.
I think you are referring to [~leftnoteasy]'s suggestion that a cluster-wide config should
be added to put a cap on the maximum priorities allowed in the queue. Is that correct? I think
that makes sense so that cluster admins can put a cap on the number of priorities within any
given queue.

> Priority scheduling support in Capacity scheduler
> -------------------------------------------------
>
>                 Key: YARN-2004
>                 URL: https://issues.apache.org/jira/browse/YARN-2004
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: capacityscheduler
>            Reporter: Sunil G
>            Assignee: Sunil G
>         Attachments: 0001-YARN-2004.patch, 0002-YARN-2004.patch, 0003-YARN-2004.patch,
0004-YARN-2004.patch, 0005-YARN-2004.patch, 0006-YARN-2004.patch
>
>
> Based on the priority of the application, Capacity Scheduler should be able to give preference
to application while doing scheduling.
> Comparator<FiCaSchedulerApp> applicationComparator can be changed as below.		
> 1.	Check for Application priority. If priority is available, then return the highest
priority job.
> 2.	Otherwise continue with existing logic such as App ID comparison and then TimeStamp
comparison.



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