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https://issues.apache.org/jira/browse/MAPREDUCE-4797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13497506#comment-13497506
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Hadoop QA commented on MAPREDUCE-4797:
--------------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest 
attachment 
  http://issues.apache.org/jira/secure/attachment/12553564/MAPREDUCE-4797.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-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app.

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

Test results: 
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/3031//testReport/
Console output: 
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/3031//console

This message is automatically generated.
                
> LocalContainerAllocator can loop forever trying to contact the RM
> -----------------------------------------------------------------
>
>                 Key: MAPREDUCE-4797
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4797
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: applicationmaster
>    Affects Versions: 0.23.3, 2.0.1-alpha
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>         Attachments: MAPREDUCE-4797.patch
>
>
> If LocalContainerAllocator has trouble communicating with the RM it can end 
> up retrying forever if the nature of the error is not a YarnException.
> This can be particulary bad if the connection went down because the cluster 
> was reset such that the RM and NM have lost track of the process and 
> therefore nothing else will eventually kill the process.  In this scenario, 
> the looping AM continues to pelt the RM with connection requests every second 
> using a stale token, and the RM logs the SASL exceptions over and over.

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