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https://issues.apache.org/jira/browse/YARN-4090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16159989#comment-16159989
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Daniel Templeton commented on YARN-4090:
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Thanks for the updated patch, [~yufeigu]. Two comments. First the management
of preempted containers' resources seems to run at odds with YARN-7057. Maybe
update this patch after you commit that one? Second, note that the CS
{{AbstractCSQueue}} has {{incUsedResource()}} and {{decUsedResource()}} methods
already. Maybe in the interest of commonality you could see if it's worth
pushing those up to {{Queue}} and using them instead of adding your own methods
for FS.
> Make Collections.sort() more efficient by caching resource usage
> ----------------------------------------------------------------
>
> Key: YARN-4090
> URL: https://issues.apache.org/jira/browse/YARN-4090
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: fairscheduler
> Reporter: Xianyin Xin
> Assignee: Yufei Gu
> Attachments: sampling1.jpg, sampling2.jpg, YARN-4090.001.patch,
> YARN-4090.002.patch, YARN-4090.003.patch, YARN-4090.004.patch,
> YARN-4090.005.patch, YARN-4090.006.patch, YARN-4090.007.patch,
> YARN-4090-preview.patch, YARN-4090-TestResult.pdf
>
>
> Collections.sort() consumes too much time in a scheduling round.
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