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https://issues.apache.org/jira/browse/YARN-4090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16137346#comment-16137346
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Daniel Templeton commented on YARN-4090:
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Thanks for moving this JIRA forward, [~yufeigu]. This sounds like an important
improvement that I'd like to see make it in by 3.0 beta 1. Beta 1 will be cut
on 15th September 2017, so we'll need to move quickly. [~zsl2007], would it be
alright with you if [~yufeigu] takes this JIRA over, or do you think you'll be
able to wrap it up in the next 3 weeks?
> 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: zhangshilong
> 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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