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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3933) Resources(both core and memory) are being negative
Date Mon, 24 Aug 2015 16:32:46 GMT

    [ https://issues.apache.org/jira/browse/YARN-3933?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14709572#comment-14709572
] 

Hadoop QA commented on YARN-3933:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | patch |   0m  1s | The patch file was not named according to hadoop's
naming conventions. Please see https://wiki.apache.org/hadoop/HowToContribute for instructions.
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| {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/12752004/patch.BUGFIX-JIRA-YARN-3933.txt
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| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / feaf034 |
| Console output | https://builds.apache.org/job/PreCommit-YARN-Build/8896/console |


This message was automatically generated.

> Resources(both core and memory) are being negative
> --------------------------------------------------
>
>                 Key: YARN-3933
>                 URL: https://issues.apache.org/jira/browse/YARN-3933
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.5.2
>            Reporter: Lavkesh Lahngir
>            Assignee: Lavkesh Lahngir
>              Labels: patch
>         Attachments: patch.BUGFIX-JIRA-YARN-3933.txt
>
>
> In our cluster we are seeing available memory and cores being negative. 
> Initial inspection:
> Scenario no. 1: 
> In capacity scheduler the method allocateContainersToNode() checks if 
> there are excess reservation of containers for an application, and they are no longer
needed then it calls queue.completedContainer() which causes resources being negative. And
they were never assigned in the first place. 
> I am still looking through the code. Can somebody suggest how to simulate excess containers
assignments ?



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