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https://issues.apache.org/jira/browse/HADOOP-4202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chris K Wensel updated HADOOP-4202:
-----------------------------------

    Affects Version/s:     (was: 0.18.0)
                       0.18.1
               Status: Patch Available  (was: Open)

> TaskTracker never stops cleanup threads, MiniMRCluster becomes unstable
> -----------------------------------------------------------------------
>
>                 Key: HADOOP-4202
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4202
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 0.18.1
>            Reporter: Chris K Wensel
>            Assignee: Chris K Wensel
>         Attachments: hadoop-4202.patch
>
>
> If many unit tests start/stop unique MiniMRCluster instances, over time the 
> number of threads in the test vm grow to large causing tests to hang and/or 
> slow down.

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