[infinispan-issues] [JBoss JIRA] Commented: (ISPN-699) occasional NullPointerException on unmarshalling in test application

[Galder Zamarreño (JIRA)]

    [ https://jira.jboss.org/browse/ISPN-699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12558170#action_12558170 ] 

Galder Zamarreño commented on ISPN-699:
---------------------------------------

It could well be, see my last comment. I do expect though that as part of resolution of this JIRA, the code in COT.readObject() will give us more clues on what is going wrong in your case. So, work on this jira won't be in vain :)

> occasional NullPointerException on unmarshalling in test application
> --------------------------------------------------------------------
>
>                 Key: ISPN-699
>                 URL: https://jira.jboss.org/browse/ISPN-699
>             Project: Infinispan
>          Issue Type: Sub-task
>          Components: Marshalling
>    Affects Versions: 4.0.0.Final, 4.1.0.Final, 4.2.0.ALPHA2
>            Reporter: Sanne Grinovero
>            Assignee: Galder Zamarreño
>             Fix For: 4.2.0.BETA1, 4.2.0.Final
>
>         Attachments: 697ispn-infinispan-readersclearedbeforeeviction.log
>
>
> See the parent issue ISPN-697 , which contains more details and an application which can occasionally reproduce the NPE.
> 2010-10-11 15:55:27,305 ERROR [Scheduled-eviction-thread-0] (FileCacheStore.java:184) - Error while reading from file: /home/cching/dev/infinispan-hang/./store/Users/-202784536 
> java.lang.NullPointerException 
> at org.infinispan.marshall.jboss.ConstantObjectTable.readObject(ConstantObjectTable.java:253) 
> at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:357) 
> at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:207) 
> at org.jboss.marshalling.AbstractUnmarshaller.readObject(AbstractUnmarshaller.java:85) 
> at org.infinispan.marshall.jboss.GenericJBossMarshaller.objectFromObjectStream(GenericJBossMarshaller.java:162) 
> at org.infinispan.marshall.VersionAwareMarshaller.objectFromObjectStream(VersionAwareMarshaller.java:179) 
> at org.infinispan.loaders.file.FileCacheStore.objectFromInputStreamInReentrantMode(FileCacheStore.java:262) 
> at org.infinispan.loaders.file.FileCacheStore.loadBucket(FileCacheStore.java:181) 
> at org.infinispan.loaders.file.FileCacheStore.purgeInternal(FileCacheStore.java:161) 
> at org.infinispan.loaders.AbstractCacheStore$2.run(AbstractCacheStore.java:84) 
> at org.infinispan.util.concurrent.WithinThreadExecutor.execute(WithinThreadExecutor.java:47) 
> at org.infinispan.loaders.AbstractCacheStore.purgeExpired(AbstractCacheStore.java:81) 
> at org.infinispan.eviction.EvictionManagerImpl.processEviction(EvictionManagerImpl.java:115) 
> at org.infinispan.eviction.EvictionManagerImpl$ScheduledTask.run(EvictionManagerImpl.java:136) 
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) 
> at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317) 
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150) 
> at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98) 
> at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181) 
> at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205) 
> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) 
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) 
> at java.lang.Thread.run(Thread.java:619)  

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