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https://issues.apache.org/jira/browse/YARN-9041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16701374#comment-16701374
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Wanqiang Ji commented on YARN-9041:
-----------------------------------
Updated 004 patch to fix the checkstyle issue and change the new UT logic to
right.
> Optimize FSPreemptionThread#identifyContainersToPreempt method
> --------------------------------------------------------------
>
> Key: YARN-9041
> URL: https://issues.apache.org/jira/browse/YARN-9041
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: scheduler preemption
> Reporter: Wanqiang Ji
> Assignee: Wanqiang Ji
> Priority: Major
> Attachments: YARN-9041.001.patch, YARN-9041.002.patch,
> YARN-9041.003.patch, YARN-9041.004.patch
>
>
> In FSPreemptionThread#identifyContainersToPreempt method, I suggest if AM
> preemption, and locality relaxation is allowed, then the search space is
> expanded to all nodes changed to the remaining nodes. The remaining nodes are
> equal to all nodes minus the potential nodes.
> Judging condition changed to:
> # rr.getRelaxLocality()
> # !ResourceRequest.isAnyLocation(rr.getResourceName())
> # bestContainers != null
> # bestContainers.numAMContainers > 0
> If I understand the deviation, please criticize me. thx~
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