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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3769) Preemption occurring unnecessarily because preemption doesn't consider user limit
Date Sat, 03 Oct 2015 22:29:27 GMT

    [ https://issues.apache.org/jira/browse/YARN-3769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14942487#comment-14942487
] 

Hadoop QA commented on YARN-3769:
---------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | patch |   0m  0s | The patch command could not apply the patch during
dryrun. |
\\
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12764916/YARN-3769-branch-2.7.002.patch
|
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 3b85bd7 |
| Console output | https://builds.apache.org/job/PreCommit-YARN-Build/9341/console |


This message was automatically generated.

> Preemption occurring unnecessarily because preemption doesn't consider user limit
> ---------------------------------------------------------------------------------
>
>                 Key: YARN-3769
>                 URL: https://issues.apache.org/jira/browse/YARN-3769
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler
>    Affects Versions: 2.6.0, 2.7.0, 2.8.0
>            Reporter: Eric Payne
>            Assignee: Eric Payne
>         Attachments: YARN-3769-branch-2.002.patch, YARN-3769-branch-2.7.002.patch, YARN-3769.001.branch-2.7.patch,
YARN-3769.001.branch-2.8.patch
>
>
> We are seeing the preemption monitor preempting containers from queue A and then seeing
the capacity scheduler giving them immediately back to queue A. This happens quite often and
causes a lot of churn.



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