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Posted to yarn-issues@hadoop.apache.org by "Yufei Gu (JIRA)" <ji...@apache.org> on 2018/12/04 18:07:00 UTC
[jira] [Updated] (YARN-9041) Performance Optimization of
FSPreemptionThread#identifyContainersToPreempt method
[ https://issues.apache.org/jira/browse/YARN-9041?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Yufei Gu updated YARN-9041:
---------------------------
Summary: Performance Optimization of FSPreemptionThread#identifyContainersToPreempt method (was: Optimize FSPreemptionThread#identifyContainersToPreempt method)
> Performance Optimization of FSPreemptionThread#identifyContainersToPreempt method
> ---------------------------------------------------------------------------------
>
> Key: YARN-9041
> URL: https://issues.apache.org/jira/browse/YARN-9041
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: fairscheduler, scheduler preemption
> Affects Versions: 3.1.1
> 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, YARN-9041.005.patch, YARN-9041.006.patch, YARN-9041.007.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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