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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4139) Potential ResourceManager deadlock when SchedulerEventDispatcher is stopped
Date Fri, 13 Apr 2012 02:27:18 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13253066#comment-13253066
] 

Hadoop QA commented on MAPREDUCE-4139:
--------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12522510/MAPREDUCE-4139.patch
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 1 new or modified test files.

    +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 appears to introduce 1 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 failed these unit tests:
                  org.apache.hadoop.yarn.applications.distributedshell.TestDistributedShell
                  org.apache.hadoop.yarn.server.TestDiskFailures
                  org.apache.hadoop.yarn.server.TestContainerManagerSecurity
                  org.apache.hadoop.yarn.server.resourcemanager.TestClientRMService
                  org.apache.hadoop.yarn.server.resourcemanager.resourcetracker.TestNMExpiry
                  org.apache.hadoop.yarn.server.resourcemanager.TestAMAuthorization
                  org.apache.hadoop.yarn.server.resourcemanager.TestApplicationACLs
                  org.apache.hadoop.mapred.TestMiniMRClasspath
                  org.apache.hadoop.mapreduce.v2.TestMRJobs
                  org.apache.hadoop.mapred.TestMiniMRWithDFSWithDistinctUsers
                  org.apache.hadoop.mapred.TestMiniMRBringup
                  org.apache.hadoop.mapred.TestMiniMRChildTask
                  org.apache.hadoop.mapred.TestReduceFetch
                  org.apache.hadoop.mapred.TestClusterMRNotification
                  org.apache.hadoop.mapred.TestReduceFetchFromPartialMem
                  org.apache.hadoop.mapred.TestJobCounters
                  org.apache.hadoop.mapreduce.TestChild
                  org.apache.hadoop.mapred.TestMiniMRClientCluster
                  org.apache.hadoop.ipc.TestSocketFactory
                  org.apache.hadoop.mapreduce.v2.TestMRJobsWithHistoryService
                  org.apache.hadoop.mapreduce.v2.TestMROldApiJobs
                  org.apache.hadoop.mapreduce.v2.TestSpeculativeExecution
                  org.apache.hadoop.mapreduce.lib.output.TestJobOutputCommitter
                  org.apache.hadoop.mapred.TestClientRedirect
                  org.apache.hadoop.mapred.TestLazyOutput
                  org.apache.hadoop.mapred.TestJobCleanup
                  org.apache.hadoop.mapreduce.TestMapReduceLazyOutput
                  org.apache.hadoop.mapred.TestSpecialCharactersInOutputPath
                  org.apache.hadoop.mapreduce.v2.TestMRAppWithCombiner
                  org.apache.hadoop.conf.TestNoDefaultsJobConf
                  org.apache.hadoop.mapreduce.v2.TestRMNMInfo
                  org.apache.hadoop.mapred.TestClusterMapReduceTestCase
                  org.apache.hadoop.mapreduce.v2.TestNonExistentJob
                  org.apache.hadoop.mapred.TestJobSysDirWithDFS
                  org.apache.hadoop.mapreduce.v2.TestUberAM
                  org.apache.hadoop.mapreduce.v2.TestMiniMRProxyUser
                  org.apache.hadoop.mapred.TestJobName
                  org.apache.hadoop.mapreduce.security.TestJHSSecurity

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2217//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2217//artifact/trunk/hadoop-mapreduce-project/patchprocess/newPatchFindbugsWarningshadoop-yarn-server-resourcemanager.html
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2217//console

This message is automatically generated.
                
> Potential ResourceManager deadlock when SchedulerEventDispatcher is stopped
> ---------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4139
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4139
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.3
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>         Attachments: MAPREDUCE-4139.patch
>
>
> When the main thread calls ResourceManager$SchedulerEventDispatcher.stop() it grabs a
lock on the object, kicks the event processor thread, and then waits for the thread to exit.
 However the interrupted event processor thread can end up trying to call the synchronized
getConfig() method which results in deadlock.

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