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From "Jason Lowe (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-4144) ResourceManager NPE while handling NODE_UPDATE
Date Thu, 12 Apr 2012 16:29:30 GMT
ResourceManager NPE while handling NODE_UPDATE
----------------------------------------------

                 Key: MAPREDUCE-4144
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4144
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv2
            Reporter: Jason Lowe
            Priority: Critical


The RM on one of our clusters has exited twice in the past few days because of an NPE while
trying to handle a NODE_UPDATE:

{noformat}
2012-04-12 02:09:01,672 FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager:
Error in handling event type NODE_UPDATE to the scheduler
 [ResourceManager Event Processor]java.lang.NullPointerException
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocateNodeLocal(AppSchedulingInfo.java:261)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo.allocate(AppSchedulingInfo.java:223)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApp.allocate(SchedulerApp.java:246)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainer(LeafQueue.java:1229)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignNodeLocalContainers(LeafQueue.java:1078)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainersOnNode(LeafQueue.java:1048)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignReservedContainer(LeafQueue.java:859)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:756)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:573)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:622)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:78)
        at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:302)
        at java.lang.Thread.run(Thread.java:619)
{noformat}

This is very similar to the failure reported in MAPREDUCE-3005.

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