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From "Xianyin Xin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4090) Make Collections.sort() more efficient in FSParentQueue.java
Date Mon, 23 May 2016 05:57:12 GMT

    [ https://issues.apache.org/jira/browse/YARN-4090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15295948#comment-15295948
] 

Xianyin Xin commented on YARN-4090:
-----------------------------------

Sorry for the delay [~yufeigu]. 
{quote}
do you mean "bring down" or "decrease" when you said "write
down" in this comment? 
{quote}
Yes, i mean decrease, and changed the comments in the new patch.
{quote}
there are two spaces between "synchronized" and "void" in public synchronized void incResourceUsage(Resourc
{quote}
Fixed.

> 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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