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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-502) RM crash with NPE on NODE_REMOVED event with FairScheduler
Date Thu, 01 Aug 2013 13:19:50 GMT

    [ https://issues.apache.org/jira/browse/YARN-502?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13726421#comment-13726421
] 

Hudson commented on YARN-502:
-----------------------------

FAILURE: Integrated in Hadoop-Hdfs-trunk #1478 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/1478/])
YARN-502. Fixed a state machine issue with RMNode inside ResourceManager which was crashing
scheduler. Contributed by Mayank Bansal. (vinodkv: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1509060)
* /hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmnode/RMNodeImpl.java
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestRMNodeTransitions.java

                
> RM crash with NPE on NODE_REMOVED event with FairScheduler
> ----------------------------------------------------------
>
>                 Key: YARN-502
>                 URL: https://issues.apache.org/jira/browse/YARN-502
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>    Affects Versions: 2.0.3-alpha
>            Reporter: Lohit Vijayarenu
>            Assignee: Mayank Bansal
>             Fix For: 2.1.1-beta
>
>         Attachments: YARN-502-trunk-1.patch, YARN-502-trunk-2.patch, YARN-502-trunk-3.patch
>
>
> While running some test and adding/removing nodes, we see RM crashed with the below exception.
We are testing with fair scheduler and running hadoop-2.0.3-alpha
> {noformat}
> 2013-03-22 18:54:27,015 INFO org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeImpl:
Deactivating Node YYYY:55680 as it is now LOST
> 2013-03-22 18:54:27,015 INFO org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeImpl:
YYYY:55680 Node Transitioned from UNHEALTHY to LOST
> 2013-03-22 18:54:27,015 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager:
Error in handling event type NODE_REMOVED to the scheduler
> java.lang.NullPointerException
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.removeNode(FairScheduler.java:619)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.handle(FairScheduler.java:856)
>         at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.handle(FairScheduler.java:98)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:375)
>         at java.lang.Thread.run(Thread.java:662)
> 2013-03-22 18:54:27,016 INFO org.apache.hadoop.yarn.server.resourcemanager.ResourceManager:
Exiting, bbye..
> 2013-03-22 18:54:27,020 INFO org.mortbay.log: Stopped SelectChannelConnector@XXXX:50030
> {noformat}

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