Sometimes NODE_UPDATE to the scheduler throws NPE causes scheduling to stop
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Key: MAPREDUCE-3530
URL: https://issues.apache.org/jira/browse/MAPREDUCE-3530
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: mrv2, resourcemanager, scheduler
Reporter: Karam Singh
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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