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https://issues.apache.org/jira/browse/MAPREDUCE-4437?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13416103#comment-13416103
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Hudson commented on MAPREDUCE-4437:
-----------------------------------
Integrated in Hadoop-Hdfs-trunk #1106 (See
[https://builds.apache.org/job/Hadoop-Hdfs-trunk/1106/])
MAPREDUCE-4437. Race in MR ApplicationMaster can cause reducers to never be
scheduled (Jason Lowe via bobby) (Revision 1362209)
Result = FAILURE
bobby : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1362209
Files :
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/rm/RMContainerAllocator.java
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/TestRMContainerAllocator.java
> Race in MR ApplicationMaster can cause reducers to never be scheduled
> ---------------------------------------------------------------------
>
> Key: MAPREDUCE-4437
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4437
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: applicationmaster, mrv2
> Affects Versions: 0.23.3, 2.1.0-alpha
> Reporter: Jason Lowe
> Assignee: Jason Lowe
> Priority: Critical
> Fix For: 0.23.3, 3.0.0, 2.2.0-alpha
>
> Attachments: MAPREDUCE-4437.patch
>
>
> If the MR AM is notified of container completion by the RM before the AM
> receives notification of the container cleanup from the NM then it can fail
> to schedule reducers indefinitely. Logs showing the issue to follow.
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