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https://issues.apache.org/jira/browse/MAPREDUCE-3572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13179747#comment-13179747
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Hadoop QA commented on MAPREDUCE-3572:
--------------------------------------
+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12509433/MAPREDUCE-3572-20120104.txt
against trunk revision .
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 3 new or modified tests.
+1 javadoc. The javadoc tool did not generate any warning messages.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
+1 eclipse:eclipse. The patch built with eclipse:eclipse.
+1 findbugs. The patch does not introduce any new Findbugs (version 1.3.9)
warnings.
+1 release audit. The applied patch does not increase the total number of
release audit warnings.
+1 core tests. The patch passed unit tests in .
+1 contrib tests. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1533//testReport/
Console output:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1533//console
This message is automatically generated.
> MR AM's dispatcher is blocked by heartbeats to ResourceManager
> --------------------------------------------------------------
>
> Key: MAPREDUCE-3572
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3572
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Components: mr-am, mrv2, performance
> Affects Versions: 0.23.0
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Vinod Kumar Vavilapalli
> Priority: Critical
> Fix For: 0.23.1
>
> Attachments: MAPREDUCE-3572-20111215.txt, MAPREDUCE-3572-20120104.txt
>
>
> All the heartbeat processing is done in {{RMContainerAllocator}} locking the
> object. The event processing is also locked on this, causing the dispatcher
> to be blocked and the rest of the AM getting stalled.
> The event processing should be in a separate thread.
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