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From "Devaraj K (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-5867) Possible NPE in KillAMPreemptionPolicy related to ProportionalCapacityPreemptionPolicy
Date Mon, 19 May 2014 06:49:38 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-5867?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Devaraj K updated MAPREDUCE-5867:
---------------------------------

       Resolution: Fixed
    Fix Version/s: 3.0.0
           Status: Resolved  (was: Patch Available)

Committed to trunk. Thanks [~sunilg] 

> 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.



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