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https://issues.apache.org/jira/browse/MAPREDUCE-408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12735036#action_12735036
 ] 

Ravi Gummadi commented on MAPREDUCE-408:
----------------------------------------

Unit tests passed on local machine.

ant test-patch gave

     [exec] +1 overall.
     [exec]
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec]
     [exec]     +1 tests included.  The patch appears to include 3 new or 
modified tests.
     [exec]
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning 
messages.
     [exec]
     [exec]     +1 javac.  The applied patch does not increase the total number 
of javac compiler warnings.
     [exec]
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs 
warnings.
     [exec]
     [exec]     +1 release audit.  The applied patch does not increase the 
total number of release audit warnings.

> TestKillSubProcesses fails with assertion failure sometimes
> -----------------------------------------------------------
>
>                 Key: MAPREDUCE-408
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-408
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 0.21.0
>            Reporter: Amareshwari Sriramadasu
>            Assignee: Ravi Gummadi
>             Fix For: 0.21.0
>
>         Attachments: MR-408.patch, MR-408.v1.1.patch, MR-408.v1.patch
>
>
> org.apache.hadoop.mapred.TestKillSubProcesses.testJobKillFailAndSucceed fails 
> sometimes with following error Message:
> {noformat}
> Unexpected: The subprocess at level 3 in the subtree is not alive before Job 
> completion
> {noformat}
> Stacktrace
> {noformat}
> junit.framework.AssertionFailedError: Unexpected: The subprocess at level 3 
> in the subtree is not alive before Job completion
>       at 
> org.apache.hadoop.mapred.TestKillSubProcesses.runJobAndSetProcessHandle(TestKillSubProcesses.java:221)
>       at 
> org.apache.hadoop.mapred.TestKillSubProcesses.runFailingJobAndValidate(TestKillSubProcesses.java:112)
>       at 
> org.apache.hadoop.mapred.TestKillSubProcesses.runTests(TestKillSubProcesses.java:327)
>       at 
> org.apache.hadoop.mapred.TestKillSubProcesses.testJobKillFailAndSucceed(TestKillSubProcesses.java:310)
> {noformat}
> one such failure at 
> http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/495/testReport/org.apache.hadoop.mapred/TestKillSubProcesses/testJobKillFailAndSucceed/

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