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Hadoop QA commented on YARN-1321: --------------------------------- {color:green}+1 overall{color}. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12611114/YARN-1321.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 2 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-yarn-project/hadoop-yarn/hadoop-yarn-client. {color:green}+1 contrib tests{color}. The patch passed contrib unit tests. Test results: https://builds.apache.org/job/PreCommit-YARN-Build/2318//testReport/ Console output: https://builds.apache.org/job/PreCommit-YARN-Build/2318//console This message is automatically generated. > NMTokenCache is a singleton, prevents multiple AMs running in a single JVM to > work correctly > -------------------------------------------------------------------------------------------- > > Key: YARN-1321 > URL: https://issues.apache.org/jira/browse/YARN-1321 > Project: Hadoop YARN > Issue Type: Bug > Components: client > Affects Versions: 2.2.0 > Reporter: Alejandro Abdelnur > Assignee: Alejandro Abdelnur > Priority: Blocker > Attachments: YARN-1321-20131029.txt, YARN-1321.patch, > YARN-1321.patch, YARN-1321.patch, YARN-1321.patch, YARN-1321.patch, > YARN-1321.patch > > > NMTokenCache is a singleton. Because of this, if running multiple AMs in a > single JVM NMTokens for the same node from different AMs step on each other > and starting containers fail due to mismatch tokens. > The error observed in the client side is something like: > {code} > ERROR org.apache.hadoop.security.UserGroupInformation: > PriviledgedActionException as:llama (auth:PROXY) via llama (auth:SIMPLE) > cause:org.apache.hadoop.yarn.exceptions.YarnException: Unauthorized request > to start container. > NMToken for application attempt : appattempt_1382038445650_0002_000001 was > used for starting container with container token issued for application > attempt : appattempt_1382038445650_0001_000001 > {code} -- This message was sent by Atlassian JIRA (v6.1#6144)