Gour Saha created YARN-2823:
-------------------------------

             Summary: NullPointerException in RM HA enabled 3-node cluster
                 Key: YARN-2823
                 URL: https://issues.apache.org/jira/browse/YARN-2823
             Project: Hadoop YARN
          Issue Type: Bug
            Reporter: Gour Saha


Branch:
2.6.0

Environment: 
A 3-node cluster with RM HA enabled. The HA setup went pretty smooth (used 
Ambari) and then installed HBase using Slider. After some time the RMs went 
down and would not come back up anymore. Following is the NPE we see in both 
the RM logs.

{noformat}
2014-09-16 01:36:28,037 FATAL resourcemanager.ResourceManager 
(ResourceManager.java:run(612)) - Error in handling event type 
APP_ATTEMPT_ADDED to the scheduler
java.lang.NullPointerException
        at 
org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApplicationAttempt.transferStateFromPreviousAttempt(SchedulerApplicationAttempt.java:530)
        at 
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.addApplicationAttempt(CapacityScheduler.java:678)
        at 
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:1015)
        at 
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:98)
        at 
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:603)
        at java.lang.Thread.run(Thread.java:744)
2014-09-16 01:36:28,042 INFO  resourcemanager.ResourceManager 
(ResourceManager.java:run(616)) - Exiting, bbye..
{noformat}

All the logs for this 3-node cluster has been uploaded.



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