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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. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira