[infinispan-issues] [JBoss JIRA] Commented: (ISPN-630) NullPointerException during object unmarshalling

[Galder Zamarreño (JIRA)]

    [ https://jira.jboss.org/browse/ISPN-630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12549346#action_12549346 ] 

Galder Zamarreño commented on ISPN-630:
---------------------------------------

This smells like some sort of issue in JBoss Marshalling. The code in ConstantObjectTable is very simple in this area: On startup writers and readers are set accordingly and are never modified again. If writers returns a non null, JBMAR writes it as a predefined object which is then read and resolved via the reader.

I think we should add some logging to Infinispan ConstantObjectTable and JBoss Marshalling to get a better idea of where things are going wrong (I can do this based on the info I have so far). Then, if you Sanne can run the tests with this added logging and you can enable TRACE in the right classes, we should be able to get more info on the issue. Finally, using this info we might be able to either build a unit test or improve the stress test you have to replicate this scenario.

WDYT?

> NullPointerException during object unmarshalling
> ------------------------------------------------
>
>                 Key: ISPN-630
>                 URL: https://jira.jboss.org/browse/ISPN-630
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Marshalling
>    Affects Versions: 4.1.0.Final
>            Reporter: Sanne Grinovero
>            Assignee: Galder Zamarreño
>             Fix For: 4.2.0.BETA1, 5.0.0.BETA1
>
>
> It appears the ExternalizerAdapter was not added to the readers, or that input.readUnsignedByte() reads a wrong identifier value.
> Not easy to reproduce, get this sometimes under load:
> Exception in thread "Scarlet/Lucene service thread index reopening thread-1" 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.objectFromByteBuffer(VersionAwareMarshaller.java:111)
> 	at org.infinispan.marshall.AbstractStreamingMarshaller.objectFromInputStream(AbstractStreamingMarshaller.java:23)
> 	at org.infinispan.loaders.jdbc.JdbcUtil.unmarshall(JdbcUtil.java:88)
> 	at org.infinispan.loaders.jdbc.stringbased.JdbcStringBasedCacheStore.loadLockSafe(JdbcStringBasedCacheStore.java:298)
> 	at org.infinispan.loaders.LockSupportCacheStore.load(LockSupportCacheStore.java:100)
> 	at org.infinispan.loaders.decorators.AbstractDelegatingStore.load(AbstractDelegatingStore.java:86)
> 	at org.infinispan.interceptors.CacheLoaderInterceptor.loadIfNeeded(CacheLoaderInterceptor.java:138)
> 	at org.infinispan.interceptors.CacheLoaderInterceptor.loadIfNeededAndUpdateStats(CacheLoaderInterceptor.java:200)
> 	at org.infinispan.interceptors.CacheLoaderInterceptor.visitGetKeyValueCommand(CacheLoaderInterceptor.java:87)
> 	at org.infinispan.commands.read.GetKeyValueCommand.acceptVisitor(GetKeyValueCommand.java:58)
> 	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:118)
> 	at org.infinispan.interceptors.base.CommandInterceptor.handleDefault(CommandInterceptor.java:132)
> 	at org.infinispan.commands.AbstractVisitor.visitGetKeyValueCommand(AbstractVisitor.java:87)
> 	at org.infinispan.commands.read.GetKeyValueCommand.acceptVisitor(GetKeyValueCommand.java:58)
> 	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:118)
> 	at org.infinispan.interceptors.TxInterceptor.enlistReadAndInvokeNext(TxInterceptor.java:171)
> 	at org.infinispan.interceptors.TxInterceptor.visitGetKeyValueCommand(TxInterceptor.java:162)
> 	at org.infinispan.commands.read.GetKeyValueCommand.acceptVisitor(GetKeyValueCommand.java:58)
> 	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:118)
> 	at org.infinispan.interceptors.CacheMgmtInterceptor.visitGetKeyValueCommand(CacheMgmtInterceptor.java:83)
> 	at org.infinispan.commands.read.GetKeyValueCommand.acceptVisitor(GetKeyValueCommand.java:58)
> 	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:118)
> 	at org.infinispan.interceptors.InvocationContextInterceptor.handleAll(InvocationContextInterceptor.java:57)
> 	at org.infinispan.interceptors.InvocationContextInterceptor.handleDefault(InvocationContextInterceptor.java:38)
> 	at org.infinispan.commands.AbstractVisitor.visitGetKeyValueCommand(AbstractVisitor.java:87)
> 	at org.infinispan.commands.read.GetKeyValueCommand.acceptVisitor(GetKeyValueCommand.java:58)
> 	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:118)
> 	at org.infinispan.interceptors.BatchingInterceptor.handleDefault(BatchingInterceptor.java:76)
> 	at org.infinispan.commands.AbstractVisitor.visitGetKeyValueCommand(AbstractVisitor.java:87)
> 	at org.infinispan.commands.read.GetKeyValueCommand.acceptVisitor(GetKeyValueCommand.java:58)
> 	at org.infinispan.interceptors.InterceptorChain.invoke(InterceptorChain.java:273)
> 	at org.infinispan.CacheDelegate.get(CacheDelegate.java:200)
> 	at org.infinispan.lucene.FileListOperations.getFileList(FileListOperations.java:54)
> 	

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