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Posted to yarn-issues@hadoop.apache.org by "Andrey Klochkov (JIRA)" <ji...@apache.org> on 2013/10/22 22:48:44 UTC

[jira] [Updated] (YARN-1183) MiniYARNCluster shutdown takes several minutes intermittently

     [ 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--n5.patch

Attaching an updated 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
>            Assignee: Andrey Klochkov
>         Attachments: YARN-1183--n2.patch, YARN-1183--n3.patch, YARN-1183--n4.patch, YARN-1183--n5.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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