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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-303) ProcfsBasedProcessTree throws ConcurrentModificationException
Date Fri, 14 Jun 2013 09:59:26 GMT

    [ https://issues.apache.org/jira/browse/YARN-303?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13683252#comment-13683252
] 

Hadoop QA commented on YARN-303:
--------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12587795/YARN-303.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-common.

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

Test results: https://builds.apache.org/job/PreCommit-YARN-Build/1239//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/1239//console

This message is automatically generated.
                
> ProcfsBasedProcessTree throws ConcurrentModificationException
> -------------------------------------------------------------
>
>                 Key: YARN-303
>                 URL: https://issues.apache.org/jira/browse/YARN-303
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.0.2-alpha, 3.0.0, 2.0.1-alpha
>            Reporter: Devaraj K
>            Assignee: Devaraj K
>         Attachments: YARN-303.patch
>
>
> {code:xml}
> Error: java.util.ConcurrentModificationException
> 	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
> 	at java.util.HashMap$EntryIterator.next(HashMap.java:834)
> 	at java.util.HashMap$EntryIterator.next(HashMap.java:832)
> 	at org.apache.hadoop.yarn.util.ProcfsBasedProcessTree.getProcessTree(ProcfsBasedProcessTree.java:208)
> 	at org.apache.hadoop.yarn.util.LinuxResourceCalculatorPlugin.getProcResourceValues(LinuxResourceCalculatorPlugin.java:406)
> 	at org.apache.hadoop.mapred.Task.getCurrentProcResourceValues(Task.java:810)
> 	at org.apache.hadoop.mapred.BlockMapOutputBuffer.sortAndSpill(BlockMapOutputBuffer.java:235)
> 	at org.apache.hadoop.mapred.BlockMapOutputBuffer.flush(BlockMapOutputBuffer.java:322)
> 	at org.apache.hadoop.mapred.MapTask$NewOutputCollector.close(MapTask.java:677)
> 	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:745)
> 	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:333)
> 	at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:154)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:396)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1232)
> 	at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:149)
> {code}

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