[infinispan-issues] [JBoss JIRA] (ISPN-3321) NPE in MapReduceTask reduce phase

[RH Bugzilla Integration (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-3321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12814019#comment-12814019 ] 

RH Bugzilla Integration commented on ISPN-3321:
-----------------------------------------------

Alan Field <afield at redhat.com> made a comment on [bug 1012999|https://bugzilla.redhat.com/show_bug.cgi?id=1012999]

I have not been able to reproduce this NPE anymore. If I see this again, I will reopen this bug.
                
> NPE in MapReduceTask reduce phase
> ---------------------------------
>
>                 Key: ISPN-3321
>                 URL: https://issues.jboss.org/browse/ISPN-3321
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Distributed Execution and Map/Reduce
>    Affects Versions: 5.3.0.Final
>            Reporter: Alan Field
>            Assignee: Dan Berindei
>            Priority: Critical
>              Labels: jdg62GAblocker
>             Fix For: 6.0.0.CR1
>
>
> During the execution of a MapReduce word count job with 6 nodes, the following NPE is thrown:
> 11:19:37,870 ERROR [org.infinispan.remoting.InboundInvocationHandlerImpl] (remote-thread-2) Exception executing command
> java.lang.NullPointerException
> 	at org.infinispan.distexec.mapreduce.MapReduceManagerImpl.reduce(MapReduceManagerImpl.java:153)
> 	at org.infinispan.commands.read.ReduceCommand.perform(ReduceCommand.java:88)
> 	at org.infinispan.remoting.InboundInvocationHandlerImpl.handleInternal(InboundInvocationHandlerImpl.java:122)
> 	at org.infinispan.remoting.InboundInvocationHandlerImpl.access$000(InboundInvocationHandlerImpl.java:68)
> 	at org.infinispan.remoting.InboundInvocationHandlerImpl$2.run(InboundInvocationHandlerImpl.java:194)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> 	at java.lang.Thread.run(Thread.java:724)
> The full log is here - https://jenkins.mw.lab.eng.bos.redhat.com/hudson/user/afield@REDHAT.COM/my-views/view/afield's%20jobs/job/jdg-radargun-mapreduce-test/181/console-edg-perf06/
> Looking at the code to see if I can figure out what happened.

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