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From "Andrey Klochkov (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-1183) MiniYARNCluster shutdown takes several minutes intermittently
Date Fri, 13 Sep 2013 16:40:52 GMT

     [ https://issues.apache.org/jira/browse/YARN-1183?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrey Klochkov updated YARN-1183:
----------------------------------

    Attachment: YARN-1183--n4.patch
    
> MiniYARNCluster shutdown takes several minutes intermittently
> -------------------------------------------------------------
>
>                 Key: YARN-1183
>                 URL: https://issues.apache.org/jira/browse/YARN-1183
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Andrey Klochkov
>         Attachments: YARN-1183--n2.patch, YARN-1183--n3.patch, YARN-1183--n4.patch, YARN-1183.patch
>
>
> As described in MAPREDUCE-5501 sometimes M/R tests leave MRAppMaster java processes living
for several minutes after successful completion of the corresponding test. There is a concurrency
issue in MiniYARNCluster shutdown logic which leads to this. Sometimes RM stops before an
app master sends it's last report, and then the app master keeps retrying for >6 minutes.
In some cases it leads to failures in subsequent tests, and it affects performance of tests
as app masters eat resources.

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