CNFE issues with Hibernate and JBoss Cache
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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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