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https://issues.apache.org/jira/browse/YARN-5969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15770854#comment-15770854
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Hadoop QA commented on YARN-5969:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m
0s{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 5s{color}
| {color:red} YARN-5969 does not apply to trunk. Rebase required? Wrong Branch?
See https://wiki.apache.org/hadoop/HowToContribute for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Issue | YARN-5969 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12844359/20161222.patch |
| Console output |
https://builds.apache.org/job/PreCommit-YARN-Build/14441/console |
| Powered by | Apache Yetus 0.5.0-SNAPSHOT http://yetus.apache.org |
This message was automatically generated.
> FairShareComparator getResourceUsage poor performance
> -----------------------------------------------------
>
> Key: YARN-5969
> URL: https://issues.apache.org/jira/browse/YARN-5969
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: fairscheduler
> Affects Versions: 2.7.1
> Reporter: zhangshilong
> Assignee: zhangshilong
> Attachments: 20161206.patch, 20161222.patch, apprunning_after.png,
> apprunning_before.png, containerAllocatedDelta_before.png,
> containerAllocated_after.png, pending_after.png, pending_before.png
>
>
> in FairShareComparator class, the performance of function getResourceUsage()
> is very poor. It will be executed above 100,000,000 times per second.
> In our scene, It takes 20 seconds per minute.
> A simple solution is to reduce call counts of the function.
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