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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1183) MiniYARNCluster shutdown takes several minutes intermittently
Date Wed, 11 Sep 2013 23:15:52 GMT

    [ https://issues.apache.org/jira/browse/YARN-1183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13764934#comment-13764934
] 

Hadoop QA commented on YARN-1183:
---------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12602698/YARN-1183.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-YARN-Build/1900//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/1900//console

This message is automatically generated.
                
> 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.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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