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https://issues.apache.org/jira/browse/YARN-2394?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14120116#comment-14120116
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Karthik Kambatla commented on YARN-2394:
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+1. Checking this in..
> 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
> 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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