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https://issues.apache.org/jira/browse/YARN-4198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15064443#comment-15064443
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Wangda Tan commented on YARN-4198:
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[~atumanov],
Could you rebase your patch against latest trunk?
Thanks,
> CapacityScheduler locking / synchronization improvements
> --------------------------------------------------------
>
> Key: YARN-4198
> URL: https://issues.apache.org/jira/browse/YARN-4198
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Carlo Curino
> Assignee: Alexey Tumanov
> Attachments: YARN-4198-v1.patch
>
>
> In the context of YARN-4193 (which stresses the RM/CS performance) we found
> several performance problems with in the locking/synchronization of the
> CapacityScheduler, as well as inconsistencies that do not normally surface
> (incorrect locking-order of queues protected by CS locks etc). This JIRA
> proposes several refactoring that improve this.
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