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From "Chang Li (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (YARN-4570) Nodemanager leaking RawLocalFilesystem instances for user "testing"
Date Fri, 08 Jan 2016 22:13:39 GMT

     [ https://issues.apache.org/jira/browse/YARN-4570?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chang Li reassigned YARN-4570:
------------------------------

    Assignee: Chang Li

> Nodemanager leaking RawLocalFilesystem instances for user "testing"
> -------------------------------------------------------------------
>
>                 Key: YARN-4570
>                 URL: https://issues.apache.org/jira/browse/YARN-4570
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 2.6.0
>            Reporter: Jason Lowe
>            Assignee: Chang Li
>
> I recently ran across a NodeManager that was running slowly due to excessive GC.  Digging
into the heap I saw that most of the issue was leaked filesystem statistics data objects which
has been fixed in HADOOP-12107.  However I also noticed there were many thousands of RawLocalFilesystem
objects on the heap, far more than any other FileSystem type.  Sampling a number of them showed
that they were for the "testing" user.



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