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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3530) Sometimes NODE_UPDATE to the scheduler throws an NPE causing the scheduling to stop
Date Thu, 15 Dec 2011 14:12:32 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3530?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13170226#comment-13170226
] 

Hudson commented on MAPREDUCE-3530:
-----------------------------------

Integrated in Hadoop-Hdfs-0.23-Build #108 (See [https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/108/])
    MAPREDUCE-3530. Fixed an NPE occuring during scheduling in the ResourceManager. Contributed
by Arun C Murthy.
svn merge -c 1214476 --ignore-ancestry ../../trunk/

vinodkv : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1214478
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmnode/RMNodeImpl.java
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMNodeTransitions.java

                
> Sometimes NODE_UPDATE to the scheduler throws an NPE causing the scheduling to stop
> -----------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3530
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3530
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2, resourcemanager, scheduler
>    Affects Versions: 0.23.1
>            Reporter: Karam Singh
>            Assignee: Arun C Murthy
>            Priority: Blocker
>             Fix For: 0.23.1
>
>         Attachments: MAPREDUCE-3530-20111214.txt, MAPREDUCE-3530.patch, MAPREDUCE-3530.patch
>
>
> Sometimes NODE_UPDATE to the scheduler throws NPE causes scheduling to stop but ResourceManager
keeps on running.
> I have been observing intermitently for last 3 weeks.
> But with latest svn code. I tried to run sort twice and both times Job got stuck due
to NPE.
> {code}
> java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.containerLaunchedOnNode(SchedulerApp.java:181)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.containerLaunchedOnNode(CapacityScheduler.java:596)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:539)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:617)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:77)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:294)
>         at java.lang.Thread.run(Thread.java:619)
> {code}

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