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Andrew Wang commented on MAPREDUCE-5867: ---------------------------------------- Hey Devraj, I think TestKillAMPreemptionPolicy.java was committed with CRLFs rather than LFs, which messes up {{git diff}} for those of us using the git mirror. Do you mind fixing this? Thanks. > Possible NPE in KillAMPreemptionPolicy related to > ProportionalCapacityPreemptionPolicy > -------------------------------------------------------------------------------------- > > Key: MAPREDUCE-5867 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-5867 > Project: Hadoop Map/Reduce > Issue Type: Sub-task > Components: resourcemanager > Affects Versions: 2.3.0 > Reporter: Sunil G > Assignee: Sunil G > Fix For: 3.0.0 > > Attachments: MapReduce-5867-updated.patch, > MapReduce-5867-updated.patch, MapReduce-5867.2.patch, MapReduce-5867.3.patch, > Yarn-1980.1.patch > > > 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. -- This message was sent by Atlassian JIRA (v6.2#6252)