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From "Wei Yan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2394) FairScheduler: Configure fairSharePreemptionThreshold per queue
Date Wed, 03 Sep 2014 17:36:52 GMT

    [ https://issues.apache.org/jira/browse/YARN-2394?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14120134#comment-14120134
] 

Wei Yan commented on YARN-2394:
-------------------------------

Thanks for the reviews, [~kasha], [~ashwinshankar77].

> FairScheduler: Configure fairSharePreemptionThreshold per queue
> ---------------------------------------------------------------
>
>                 Key: YARN-2394
>                 URL: https://issues.apache.org/jira/browse/YARN-2394
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: fairscheduler
>            Reporter: Ashwin Shankar
>            Assignee: Wei Yan
>             Fix For: 2.6.0
>
>         Attachments: YARN-2394-1.patch, YARN-2394-2.patch, YARN-2394-3.patch, YARN-2394-4.patch,
YARN-2394-5.patch, YARN-2394-6.patch, YARN-2394-7.patch
>
>
> Preemption based on fair share starvation happens when usage of a queue is less than
50% of its fair share. This 50% is hardcoded. We'd like to make this configurable on a per
queue basis, so that we can choose the threshold at which we want to preempt. Calling this
config "fairSharePreemptionThreshold". 



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