[jboss-jira] [JBoss JIRA] Created: (JBCLUSTER-150) CNFE issues with Hibernate and JBoss Cache

[Brian Stansberry (JIRA)]

CNFE issues with Hibernate and JBoss Cache
------------------------------------------

                 Key: JBCLUSTER-150
                 URL: http://jira.jboss.com/jira/browse/JBCLUSTER-150
             Project: JBoss Clustering
          Issue Type: Bug
      Security Level: Public (Everyone can see)
            Reporter: Brian Stansberry
         Assigned To: Brian Stansberry
             Fix For: Q4Y6


Hibernate w/ JBC as 2nd level cache can potentially place instances of custom user classes in the cache.  Can happen if the query cache is used, since instances of custom classes can be parameters to queries.

This leads to replication or state transfer problems like the following if the custom classes are not visible to JBC's classloader (i.e. the custom classes aren't in server/all/lib).   For regular entity caching, Hibernate stores primitives in the cache, so this is less of an issue.  Problem is more with the query cache.

java.lang.ClassNotFoundException: No ClassLoaders found for: services.entities.ProductDemandPK
        at org.jboss.mx.loading.LoadMgr3.beginLoadTask(LoadMgr3.java:212)
        at org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoader.java:511)
        at org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java:405)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:242)
        at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:585)
        at org.jboss.invocation.MarshalledValueInputStream.resolveClass(MarshalledValueInputStream.j
ava:109)
        at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1544)
        at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1466)
        at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1699)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
        at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1908)
        at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1832)
        at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
        at org.jboss.cache.Fqn.readExternal(Fqn.java:355)
        at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1755)
        at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1717)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
        at org.jboss.cache.loader.NodeData.readExternal(NodeData.java:59)
        at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1755)
        at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1717)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
        at org.jboss.cache.statetransfer.StateTransferIntegrator_140.integrateStateTransferChildren(
StateTransferIntegrator_140.java:241)
        at org.jboss.cache.statetransfer.StateTransferIntegrator_140.integrateStateTransferChildren(
StateTransferIntegrator_140.java:271)
        at org.jboss.cache.statetransfer.StateTransferIntegrator_140.integrateStateTransferChildren(
StateTransferIntegrator_140.java:271)
        at org.jboss.cache.statetransfer.StateTransferIntegrator_140.integrateStateTransferChildren(
StateTransferIntegrator_140.java:271)
        at org.jboss.cache.statetransfer.StateTransferIntegrator_140.integrateTransientState(StateTr
ansferIntegrator_140.java:222)
        at org.jboss.cache.statetransfer.StateTransferIntegrator_140.integrateTransientState(StateTr
ansferIntegrator_140.java:97)
        at org.jboss.cache.TreeCache._setState(TreeCache.java:2640)
        at org.jboss.cache.TreeCache.access$000(TreeCache.java:86)
        at org.jboss.cache.TreeCache$MessageListenerAdaptor.setState(TreeCache.java:5306)
        at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.passUp(MessageDispatcher.java:614)
        at org.jgroups.blocks.RequestCorrelator.receive(RequestCorrelator.java:331)
        at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.handleUp(MessageDispatcher.java:722)

        at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.access$300(MessageDispatcher.java:55
4)
        at org.jgroups.blocks.MessageDispatcher$1.run(MessageDispatcher.java:691)
        at java.lang.Thread.run(Thread.java:595)
	

JBC's region-based marshalling API is meant for dealing with this kind of thing.  Need to see how Hibernate can be configured to work with this API.  Expect this will lead to JIRAs in the Hibernate and possible EBJ3 project.

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