[jboss-jira] [JBoss JIRA] Commented: (HIBERNATE-46) Javassist lazy proxy factoring not thread-safe

Michael Small (JIRA) jira-events at jboss.com
Wed Oct 4 11:56:41 EDT 2006 

    [ http://jira.jboss.com/jira/browse/HIBERNATE-46?page=comments#action_12344628 ] 
            
Michael Small commented on HIBERNATE-46:
----------------------------------------

When will this problem be resolved?  I've recently upgraded to 4.0.4GA and now I get the above error.  Additionally, I'm getting a related PermGen error:

at $Proxy300.getParticipation(Unknown Source)
        at com.tasconline.flexsystem.web.ui.event.action.GetAccountManagementDataAjaxAction.performAction(GetAccountManagementDataAjaxAction.java:82)
        at com.tasconline.web.ui.ajax.AjaxPhaseListener.handleRequest(AjaxPhaseListener.java:103)
        at com.tasconline.web.ui.ajax.AjaxPhaseListener.afterPhase(AjaxPhaseListener.java:81)
        at org.apache.myfaces.lifecycle.LifecycleImpl.informPhaseListenersAfter(LifecycleImpl.java:536)
        at org.apache.myfaces.lifecycle.LifecycleImpl.restoreView(LifecycleImpl.java:164)
        at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:66)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:106)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at com.tasconline.security.web.ui.filter.SecurityFilter.doFilter(SecurityFilter.java:102)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at com.tasconline.web.ui.filter.InitializeFilter.doFilter(InitializeFilter.java:67)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(ExtensionsFilter.java:122)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
        at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
        at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
        at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
        at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
        at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
        at java.lang.Thread.run(Thread.java:595)
Caused by: java.io.IOException
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithMethod(RegularObjectPersister.java:107)
        at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:269)
        at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:241)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:411)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:81)
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:841)
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithFields(RegularObjectPersister.java:353)
        at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:273)
        at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:241)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:411)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:81)
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:841)
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithFields(RegularObjectPersister.java:353)
        at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:273)
        at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:241)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:411)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:81)
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:841)
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithFields(RegularObjectPersister.java:353)
        at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:273)
        at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:241)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:411)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:81)
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:841)
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithFields(RegularObjectPersister.java:353)
        at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:273)
        at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:241)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:411)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:81)
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:841)
        at org.jboss.serial.io.MarshalledObjectForLocalCalls.get(MarshalledObjectForLocalCalls.java:60)
        at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:73)
        at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
        at org.jboss.ejb3.stateless.StatelessRemoteProxy.invoke(StatelessRemoteProxy.java:102)
        ... 35 more
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.GeneratedMethodAccessor876.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithMethod(RegularObjectPersister.java:103)
        ... 68 more
Caused by: java.io.IOException
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithMethod(RegularObjectPersister.java:107)
        at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:269)
        at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:241)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:411)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:81)
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:841)
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithFields(RegularObjectPersister.java:353)
        at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:273)
        at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:241)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:411)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:81)
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:841)
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithFields(RegularObjectPersister.java:353)
        at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:273)
        at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:241)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:411)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:81)
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:841)
        at org.jboss.serial.persister.ObjectInputStreamProxy.readObjectOverride(ObjectInputStreamProxy.java:68)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:342)
        at java.util.ArrayList.readObject(ArrayList.java:591)
        ... 72 more
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.GeneratedMethodAccessor876.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithMethod(RegularObjectPersister.java:103)
        ... 92 more
Caused by: org.jboss.serial.exception.SerializationException
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:436)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:81)
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:841)
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithFields(RegularObjectPersister.java:353)
        at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:273)
        at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:241)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:411)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:81)
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:841)
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithFields(RegularObjectPersister.java:353)
        at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:273)
        at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:241)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:411)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:81)
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:841)
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithFields(RegularObjectPersister.java:353)
        at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:273)
        at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:241)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:411)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:81)
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:841)
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithFields(RegularObjectPersister.java:353)
        at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:273)
        at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:241)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:411)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:81)
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:841)
        at org.jboss.serial.persister.RegularObjectPersister.readSlotWithFields(RegularObjectPersister.java:353)
        at org.jboss.serial.persister.RegularObjectPersister.defaultRead(RegularObjectPersister.java:273)
        at org.jboss.serial.persister.RegularObjectPersister.readData(RegularObjectPersister.java:241)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:411)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.objectFromDescription(ObjectDescriptorFactory.java:81)
        at org.jboss.serial.objectmetamodel.DataContainer$DataContainerInput.readObject(DataContainer.java:841)
        at org.jboss.serial.persister.ObjectInputStreamProxy.readObjectOverride(ObjectInputStreamProxy.java:68)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:342)
        at java.util.ArrayList.readObject(ArrayList.java:591)
        ... 96 more
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.readObjectDescriptionFromStreaming(ObjectDescriptorFactory.java:426)
        ... 131 more
Caused by: org.hibernate.HibernateException: Javassist Enhancement failed: com.tasconline.mbi.MbiParticipant
        at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.getProxy(JavassistLazyInitializer.java:88)
        at org.hibernate.proxy.pojo.javassist.SerializableProxy.readResolve(SerializableProxy.java:54)
        ... 136 more
Caused by: java.lang.RuntimeException: by java.lang.OutOfMemoryError: PermGen space
        at javassist.util.proxy.ProxyFactory.createClass(ProxyFactory.java:173)
        at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.getProxy(JavassistLazyInitializer.java:79)
        ... 137 more
Caused by: javassist.CannotCompileException: by java.lang.OutOfMemoryError: PermGen space
        at javassist.util.proxy.FactoryHelper.toClass(FactoryHelper.java:125)
        at javassist.util.proxy.ProxyFactory.createClass(ProxyFactory.java:169)
        ... 138 more

> Javassist lazy proxy factoring not thread-safe
> ----------------------------------------------
>
>                 Key: HIBERNATE-46
>                 URL: http://jira.jboss.com/jira/browse/HIBERNATE-46
>             Project: Hibernate
>          Issue Type: Bug
>         Environment: JBoss AS 4.0.4 with EJB 3-RC8
>            Reporter: Ortwin Glück
>         Assigned To: Steve Ebersole
>
> Multiple threads may simultanously (especially on SMP systems) create proxy classes for the first time. The JavassistLazyInitializer is not completely thread safe. So the first thread will successfully create the dynamic class, while a second thread may fail. We saw this happen a few times at JBoss startup when multiple messages from other systems arrived via JMS (quite normal when you take your PROD system down for some minutes, as work keeps queuing up). So multiple MDB threads were running the same transactions (using the same classes) and thus the probability for this error to occur is close to 100%.
> The situation can easily be solved by proper synchronization inside the JavassistLazyInitializer.
> Caused by: java.lang.RuntimeException: by java.lang.LinkageError: duplicate clas
> s definition: test/BusinessOrganization_$$_javass
> ist_272
>         at javassist.util.proxy.ProxyFactory.createClass(ProxyFactory.java:173)
>         at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.getProxy(
> JavassistLazyInitializer.java:79)
>         ... 136 more
> Caused by: javassist.CannotCompileException: by java.lang.LinkageError: duplicat
> e class definition: test/BusinessOrganization_$$_
> javassist_272
>         at javassist.util.proxy.FactoryHelper.toClass(FactoryHelper.java:125)
>         at javassist.util.proxy.ProxyFactory.createClass(ProxyFactory.java:169)
>         ... 137 more
> Caused by: java.lang.LinkageError: duplicate class definition: test/BusinessOrganization_$$_javassist_272
>         at java.lang.ClassLoader.defineClass1(Native Method)
>         at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
>         at java.lang.ClassLoader.defineClass(ClassLoader.java:465)
>         at sun.reflect.GeneratedMethodAccessor110.invoke(Unknown Source)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
> sorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:585)
>         at javassist.util.proxy.FactoryHelper.toClass(FactoryHelper.java:117)
>         ... 138 more

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