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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5296) NMs going OutOfMemory because ContainerMetrics leak in ContainerMonitorImpl
Date Fri, 01 Jul 2016 21:01:11 GMT

    [ https://issues.apache.org/jira/browse/YARN-5296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15359620#comment-15359620
] 

Jian He commented on YARN-5296:
-------------------------------

I analyzed the memory heap dump together with Junping. This is indeed an issue to be fixed.
I'd like to commit this today.  

> NMs going OutOfMemory because ContainerMetrics leak in ContainerMonitorImpl
> ---------------------------------------------------------------------------
>
>                 Key: YARN-5296
>                 URL: https://issues.apache.org/jira/browse/YARN-5296
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 2.8.0, 2.9.0
>            Reporter: Karam Singh
>            Assignee: Junping Du
>         Attachments: YARN-5296.patch
>
>
> Ran tests in following manner,
> 1. Run GridMix of 768 sequestionally around 17 times to execute about 12.9K apps.
> 2. After 4-5hrs take Check NM Heap using Memory Analyser. It report around 96% Heap is
being used my ContainerMetrics
> 3. Run 7 more GridMix run for have around 18.2apps ran in total. Again check NM heap
using Memory Analyser again 96% heap is being used by ContainerMetrics. 
> 4. Start one more grimdmix run, while run going on , NMs started going down with OOM,
around running 18.7K+, On analysing NM heap using Memory analyser, OOM was caused by ContainerMetrics



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