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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1183) MiniYARNCluster shutdown takes several minutes intermittently
Date Wed, 23 Oct 2013 14:05:51 GMT

    [ https://issues.apache.org/jira/browse/YARN-1183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13802883#comment-13802883
] 

Hudson commented on YARN-1183:
------------------------------

FAILURE: Integrated in Hadoop-Mapreduce-trunk #1587 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1587/])
YARN-1183. MiniYARNCluster shutdown takes several minutes intermittently (Andrey Klochkov
via jeagles) (jeagles: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1534800)
* /hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/src/test/java/org/apache/hadoop/yarn/server/MiniYARNCluster.java


> 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
>             Fix For: 3.0.0, 2.3.0
>
>         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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