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From "stefanlee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4090) Make Collections.sort() more efficient by caching resource usage
Date Fri, 02 Mar 2018 09:28:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-4090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16383390#comment-16383390
] 

stefanlee commented on YARN-4090:
---------------------------------

[~yufeigu] [~xinxianyin] Thanks for this Jira ,how much performance improvement of this  optimization?

> 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
>    Affects Versions: 2.8.1, 3.0.0-alpha3
>            Reporter: Xianyin Xin
>            Assignee: Yufei Gu
>            Priority: Major
>             Fix For: 2.9.0, 3.0.0, 3.1.0
>
>         Attachments: YARN-4090-TestResult.pdf, YARN-4090-preview.patch, 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-4090.008.patch, YARN-4090.009.patch, sampling1.jpg, sampling2.jpg
>
>
> Collections.sort() consumes too much time in a scheduling round.



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