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https://issues.apache.org/jira/browse/YARN-4090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15280855#comment-15280855
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Yufei Gu commented on YARN-4090:
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Another minor nit: there are two spaces between "synchronized" and "void" in
{{public synchronized void incResourceUsage(Resource res)}}.
> Make Collections.sort() more efficient in FSParentQueue.java
> ------------------------------------------------------------
>
> Key: YARN-4090
> URL: https://issues.apache.org/jira/browse/YARN-4090
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: fairscheduler
> Reporter: Xianyin Xin
> Assignee: Xianyin Xin
> Attachments: YARN-4090-TestResult.pdf, YARN-4090-preview.patch,
> YARN-4090.001.patch, sampling1.jpg, sampling2.jpg
>
>
> Collections.sort() consumes too much time in a scheduling round.
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