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From "zhangyubiao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4090) Make Collections.sort() more efficient in FSParentQueue.java
Date Fri, 25 Nov 2016 08:01:13 GMT

    [ https://issues.apache.org/jira/browse/YARN-4090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15695179#comment-15695179
] 

zhangyubiao commented on YARN-4090:
-----------------------------------

[~xinxianyin],our team attached the  patch   to 2.7.1  and we found  a deadlock occurs.

> 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,
YARN-4090.002.patch, YARN-4090.003.patch, sampling1.jpg, sampling2.jpg
>
>
> Collections.sort() consumes too much time in a scheduling round.



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