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From "Sunil G (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-1980) Possible NPE in KillAMPreemptionPolicy related to ProportionalCapacityPreemptionPolicy
Date Thu, 24 Apr 2014 12:47:15 GMT
Sunil G created YARN-1980:
-----------------------------

             Summary: Possible NPE in KillAMPreemptionPolicy related to ProportionalCapacityPreemptionPolicy
                 Key: YARN-1980
                 URL: https://issues.apache.org/jira/browse/YARN-1980
             Project: Hadoop YARN
          Issue Type: Bug
          Components: resourcemanager
    Affects Versions: 2.3.0
            Reporter: Sunil G


I configured KillAMPreemptionPolicy for My Application Master and tried to check preemption
of queues.
In one scenario I have seen below NPE in my AM

014-04-24 15:11:08,860 ERROR [RMCommunicator Allocator] org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator:
ERROR IN CONTACTING RM. 
java.lang.NullPointerException
	at org.apache.hadoop.mapreduce.v2.app.rm.preemption.KillAMPreemptionPolicy.preempt(KillAMPreemptionPolicy.java:57)
	at org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator.getResources(RMContainerAllocator.java:662)
	at org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator.heartbeat(RMContainerAllocator.java:246)
	at org.apache.hadoop.mapreduce.v2.app.rm.RMCommunicator$1.run(RMCommunicator.java:267)
	at java.lang.Thread.run(Thread.java:662)

I was using 2.2.0 and merged MAPREDUCE-5189 to see how AM preemption works.



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