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

[Galder Zamarreño (JIRA)]

     [ https://jira.jboss.org/browse/ISPN-630?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Galder Zamarreño updated ISPN-630:
----------------------------------

    Attachment: Better_reporting_for_null_adapter_and_more_log_at_write_time.zip


Find attached a zip containing a patched Infinispan core jar with better reporting for when the adapter is null and some extra logging for when a ConcurrentHashSet is written. In particular, 0x03 id that signals predefined object type can only be written for a ConcurrentHashSet if at writing time anything other than null is returned from the predefined object type lookup.

Since we're dealing with a concurrent collection, I've played around with a test that marshalls/unmarshalls a CHS while another thread adds/removes to it, in case the issue is due to concurrent modification/marshalling.

When you run your tests, enable TRACE logging for org.infinispan.marshall.jboss.ConstantObjectTable class. Logging won't be verbose.

Finally Sanne, I'm curious to know whether when you get this NPE, the exception *always* looks exactly the same.

> 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
>
>         Attachments: Better_reporting_for_null_adapter_and_more_log_at_write_time.zip
>
>
> 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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