[infinispan-issues] [JBoss JIRA] (ISPN-2726) Sporadic NPE in KeyAffinityServiceImpl

[Galder Zamarreño (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-2726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12751108#comment-12751108 ] 

Galder Zamarreño commented on ISPN-2726:
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Assigning this to Mircea who's the expert of the KeyAffinityServiceImpl.

Assuming this is related to rehashing, getAddressForKey() could return null and in generateKeys(), the address returned is null, it could continue the loop. The biggest problem there is what happens when getCollocatedKey() calls getAddressForKey(), what to do with a null Address? The only possibility there would be to wait until address is not null, but that looks a hack for me.

[~dan.berindei], should DistributionManager.getConsistentHash() return null at all?

                
> Sporadic NPE in KeyAffinityServiceImpl
> --------------------------------------
>
>                 Key: ISPN-2726
>                 URL: https://issues.jboss.org/browse/ISPN-2726
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Distributed Cache
>    Affects Versions: 5.2.0.CR1
>            Reporter: Thomas Fromm
>            Assignee: Mircea Markus
>             Fix For: 5.2.0.Final
>
>
> The NPE appears not often, unfortunality with enabled TRACE logging, it never appears :-( I'll keep trying to get TRACEs.
> Exception in thread "pool-70-thread-1" java.lang.NullPointerException
>         at org.infinispan.affinity.KeyAffinityServiceImpl.getAddressForKey(KeyAffinityServiceImpl.java:347)
>         at org.infinispan.affinity.KeyAffinityServiceImpl.access$700(KeyAffinityServiceImpl.java:59)
>         at org.infinispan.affinity.KeyAffinityServiceImpl$KeyGeneratorWorker.generateKeys(KeyAffinityServiceImpl.java:270)
>         at org.infinispan.affinity.KeyAffinityServiceImpl$KeyGeneratorWorker.run(KeyAffinityServiceImpl.java:242)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
>         at java.lang.Thread.run(Thread.java:722)

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