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https://issues.apache.org/jira/browse/YARN-2073?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14029854#comment-14029854
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Karthik Kambatla commented on YARN-2073:
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Thanks again for finding and fixing this folks. Just committed YARN-2155 that
fixes this.
> Fair Scheduler: Add a utilization threshold to prevent preempting resources
> when cluster is free
> ------------------------------------------------------------------------------------------------
>
> Key: YARN-2073
> URL: https://issues.apache.org/jira/browse/YARN-2073
> Project: Hadoop YARN
> Issue Type: Bug
> Components: scheduler
> Affects Versions: 2.4.0
> Reporter: Karthik Kambatla
> Assignee: Karthik Kambatla
> Priority: Critical
> Fix For: 2.5.0
>
> Attachments: yarn-2073-0.patch, yarn-2073-1.patch, yarn-2073-2.patch,
> yarn-2073-3.patch, yarn-2073-4.patch
>
>
> Preemption should kick in only when the currently available slots don't match
> the request.
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