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https://issues.apache.org/jira/browse/YARN-5831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15826987#comment-15826987
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Yufei Gu commented on YARN-5831:
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Thanks [~kasha] for the review. Uploaded the patch 005 for your comments. I
think we should document how the {{allowPreemptionFrom}} works. Would you
suggest another JIRA?
> Propagate allowPreemptionFrom flag all the way down to the app
> --------------------------------------------------------------
>
> Key: YARN-5831
> URL: https://issues.apache.org/jira/browse/YARN-5831
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: fairscheduler
> Reporter: Karthik Kambatla
> Assignee: Yufei Gu
> Attachments: YARN-5831.001.patch, YARN-5831.002.patch,
> YARN-5831.003.patch, YARN-5831.004.patch, YARN-5831.005.patch
>
>
> FairScheduler allows disallowing preemption from a queue. When checking if
> preemption for an application is allowed, the new preemption code recurses
> all the way to the root queue to check this flag.
> Propagating this information all the way to the app will be more efficient.
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