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https://issues.apache.org/jira/browse/MAPREDUCE-4071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13247230#comment-13247230
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Robert Joseph Evans commented on MAPREDUCE-4071:
------------------------------------------------
The patch does not appear to compile against trunk.
{code}
/home/jenkins/jenkins-slave/workspace/PreCommit-MAPREDUCE-Build/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/TestRMContainerAllocator.java:[1217,4]
method does not override or implement a method from a supertype
{code}
It could be a hickup in Jenkins, but could you please try to upmerge and verify
that everything still builds and runs correctly.
> NPE while executing MRAppMaster shutdown hook
> ---------------------------------------------
>
> Key: MAPREDUCE-4071
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4071
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mr-am, mrv2
> Affects Versions: 0.23.3, 2.0.0
> Reporter: Bhallamudi Venkata Siva Kamesh
> Attachments: MAPREDUCE-4071-1.patch, MAPREDUCE-4071.patch
>
>
> While running the shutdown hook of MRAppMaster, hit NPE
> {noformat}
> Exception in thread "Thread-1" java.lang.NullPointerException
> at
> org.apache.hadoop.mapreduce.v2.app.MRAppMaster$ContainerAllocatorRouter.setSignalled(MRAppMaster.java:668)
> at
> org.apache.hadoop.mapreduce.v2.app.MRAppMaster$MRAppMasterShutdownHook.run(MRAppMaster.java:1004)
> {noformat}
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