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https://issues.apache.org/jira/browse/YARN-5825?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15819695#comment-15819695
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Andrew Wang commented on YARN-5825:
-----------------------------------
Doing a release notes sweep for 3.0.0-alpha2, noticed this JIRA. If it's
incompatible, should it have been committed to branch-2?
Also, if this is incompatible, could someone also add a release note detailing
the exposure? Thanks!
> ProportionalPreemptionalPolicy could use readLock over LeafQueue instead of
> synchronized block
> ----------------------------------------------------------------------------------------------
>
> Key: YARN-5825
> URL: https://issues.apache.org/jira/browse/YARN-5825
> Project: Hadoop YARN
> Issue Type: Bug
> Components: capacity scheduler
> Reporter: Sunil G
> Assignee: Sunil G
> Fix For: 2.9.0, 3.0.0-alpha2
>
> Attachments: YARN-5825.0001.patch, YARN-5825.0002.patch
>
>
> Currently in PCPP, {{synchronized (curQueue)}} is used in various places.
> Such instances could be replaced with a read lock. Thank you [~jianhe] for
> pointing out the same as comment
> [here|https://issues.apache.org/jira/browse/YARN-2009?focusedCommentId=15626578&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15626578]
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