0 Replies Latest reply on Mar 20, 2009 6:26 AM by Fabien Coppens

    Classloader isolation problems in JBoss AS 4.2.3.GA

    Fabien Coppens Newbie

      Hi.
      I am having some serious classloader-related problems when deploying an EAR on JBoss AS 4.2.3. The EAR contains a WAR and a lib directory at the root of the EAR contains all the librairies. I have not defined a jboss-app.xml file and therefore no EAR-specific loader repository, BUT I have switched isolation to true in the deploy/ear-deployer.xml file, i.e. :

      <attribute name="Isolated">true</attribute>
      <attribute name="CallByValue">true</attribute>

      Also, I checked that in deploy\jboss-web.deployer\META-INF\jboss-service.xml, we have (default values) :
      <attribute name="Java2ClassLoadingCompliance">false</attribute>
      <attribute name="UseJBossWebLoader">false</attribute>

      Thus, I would expect the EAR's classloader to be isolated from the unified classloader, and the WAR's classloader to folow servlet 2.4 specs and not delegate to its parent by default. Also, please note that there are no jars in WEB-INF/lib in the WAR.
      Well, to my surprise, I am getting some ClassCastException errors because of an obvious conflict between the EAR's libs and the libs packaged with JBoss. See below for the stack trace.
      Please help !
      Fabien

      Error trace at EAR deployment time :
      2009-03-20 10:55:00,253 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/]] Erreur lors de la configuration de la classe d'écoute de l'application (application listener) com.vsct.vsc.loisir.web.listener.CustomHttpSessionListener
      java.lang.ExceptionInInitializerError
      at org.apache.log4j.Logger.getLogger(Logger.java:104)
      at com.cbe.tech.log.common.Log.(Log.java:38)
      at com.vsct.vsc.loisir.web.listener.CustomHttpSessionListener.(CustomHttpSessionListener.java:65)
      at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
      at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
      at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
      at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
      at java.lang.Class.newInstance0(Class.java:350)
      at java.lang.Class.newInstance(Class.java:303)
      at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3800)
      at org.apache.catalina.core.StandardContext.start(StandardContext.java:4361)
      at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:790)
      at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:770)
      at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:553)
      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.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:296)
      at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
      at org.apache.catalina.core.StandardContext.init(StandardContext.java:5312)
      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.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:296)
      at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
      at org.jboss.web.tomcat.service.TomcatDeployer.performDeployInternal(TomcatDeployer.java:301)
      at org.jboss.web.tomcat.service.TomcatDeployer.performDeploy(TomcatDeployer.java:104)
      at org.jboss.web.AbstractWebDeployer.start(AbstractWebDeployer.java:375)
      at org.jboss.web.WebModule.startModule(WebModule.java:83)
      at org.jboss.web.WebModule.startService(WebModule.java:61)
      at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
      at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
      at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:585)
      at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
      at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
      at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
      at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
      at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
      at $Proxy0.start(Unknown Source)
      at org.jboss.system.ServiceController.start(ServiceController.java:417)
      at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:585)
      at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
      at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
      at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
      at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
      at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
      at $Proxy44.start(Unknown Source)
      at org.jboss.web.AbstractWebContainer.start(AbstractWebContainer.java:466)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:585)
      at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
      at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
      at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
      at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
      at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
      at org.jboss.mx.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:97)
      at org.jboss.system.InterceptorServiceMBeanSupport.invokeNext(InterceptorServiceMBeanSupport.java:238)
      at org.jboss.wsf.container.jboss42.DeployerInterceptor.start(DeployerInterceptor.java:87)
      at org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor.start(SubDeployerInterceptorSupport.java:188)
      at org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterceptor.java:95)
      at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
      at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
      at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
      at $Proxy45.start(Unknown Source)
      at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
      at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1015)
      at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
      at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
      at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:585)
      at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
      at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
      at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
      at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
      at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
      at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
      at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
      at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
      at $Proxy9.deploy(Unknown Source)
      at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421)
      at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:634)
      at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263)
      at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.loop(AbstractDeploymentScanner.java:274)
      at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.run(AbstractDeploymentScanner.java:225)
      Caused by: java.lang.ClassCastException: org.apache.xerces.jaxp.DocumentBuilderFactoryImpl
      at javax.xml.parsers.DocumentBuilderFactory.newInstance(Unknown Source)
      at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:694)
      at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:618)
      at org.apache.log4j.helpers.OptionConverter.selectAndConfigure(OptionConverter.java:470)
      at org.apache.log4j.LogManager.(LogManager.java:122)
      ... 99 more
      2009-03-20 10:55:00,331 DEBUG [org.jboss.mx.loading.RepositoryClassLoader] setRepository, repository=org.jboss.mx.loading.HeirarchicalLoaderRepository3@408893, cl=org.jboss.mx.loading.HeirarchicalLoaderRepository3$CacheClassLoader@1086036{ url=null ,addedOrder=0}
      2009-03-20 10:55:00,347 DEBUG [org.jboss.mx.loading.RepositoryClassLoader] setRepository, repository=org.jboss.mx.loading.HeirarchicalLoaderRepository3@408893, cl=org.jboss.mx.loading.HeirarchicalLoaderRepository3$CacheClassLoader@13887c2{ url=null ,addedOrder=0}
      2009-03-20 10:55:00,347 DEBUG [org.jboss.mx.loading.RepositoryClassLoader] setRepository, repository=org.jboss.mx.loading.HeirarchicalLoaderRepository3@408893, cl=org.jboss.mx.loading.HeirarchicalLoaderRepository3$CacheClassLoader@e22632{ url=null ,addedOrder=0}
      2009-03-20 10:55:00,347 DEBUG [org.jboss.mx.loading.RepositoryClassLoader] setRepository, repository=org.jboss.mx.loading.HeirarchicalLoaderRepository3@408893, cl=org.jboss.mx.loading.HeirarchicalLoaderRepository3$CacheClassLoader@b92dc2{ url=null ,addedOrder=0}
      2009-03-20 10:55:00,347 DEBUG [org.jboss.mx.loading.RepositoryClassLoader] setRepository, repository=org.jboss.mx.loading.HeirarchicalLoaderRepository3@408893, cl=org.jboss.mx.loading.HeirarchicalLoaderRepository3$CacheClassLoader@16b4e30{ url=null ,addedOrder=0}
      2009-03-20 10:55:00,347 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/]] Erreur lors de la configuration de la classe d'écoute de l'application (application listener) net.sf.ehcache.constructs.web.ShutdownListener
      java.lang.ExceptionInInitializerError
      at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
      at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
      at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
      at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
      at java.lang.Class.newInstance0(Class.java:350)
      at java.lang.Class.newInstance(Class.java:303)
      at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3800)
      at org.apache.catalina.core.StandardContext.start(StandardContext.java:4361)
      at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:790)
      at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:770)
      at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:553)
      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.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:296)
      at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
      at org.apache.catalina.core.StandardContext.init(StandardContext.java:5312)
      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.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:296)
      at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
      at org.jboss.web.tomcat.service.TomcatDeployer.performDeployInternal(TomcatDeployer.java:301)
      at org.jboss.web.tomcat.service.TomcatDeployer.performDeploy(TomcatDeployer.java:104)
      at org.jboss.web.AbstractWebDeployer.start(AbstractWebDeployer.java:375)
      at org.jboss.web.WebModule.startModule(WebModule.java:83)
      at org.jboss.web.WebModule.startService(WebModule.java:61)
      at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
      at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
      at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:585)
      at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
      at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
      at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
      at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
      at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
      at $Proxy0.start(Unknown Source)
      at org.jboss.system.ServiceController.start(ServiceController.java:417)
      at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:585)
      at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
      at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
      at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
      at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
      at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
      at $Proxy44.start(Unknown Source)
      at org.jboss.web.AbstractWebContainer.start(AbstractWebContainer.java:466)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:585)
      at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
      at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
      at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
      at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
      at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
      at org.jboss.mx.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:97)
      at org.jboss.system.InterceptorServiceMBeanSupport.invokeNext(InterceptorServiceMBeanSupport.java:238)
      at org.jboss.wsf.container.jboss42.DeployerInterceptor.start(DeployerInterceptor.java:87)
      at org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor.start(SubDeployerInterceptorSupport.java:188)
      at org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterceptor.java:95)
      at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
      at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
      at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
      at $Proxy45.start(Unknown Source)
      at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
      at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1015)
      at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
      at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
      at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:585)
      at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
      at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
      at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
      at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
      at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
      at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
      at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
      at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
      at $Proxy9.deploy(Unknown Source)
      at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421)
      at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:634)
      at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263)
      at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.loop(AbstractDeploymentScanner.java:274)
      at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.run(AbstractDeploymentScanner.java:225)
      Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Class org.apache.commons.logging.impl.Log4JLogger does not implement Log
      at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:509)
      at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:285)
      at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:400)
      at net.sf.ehcache.constructs.web.ShutdownListener.(ShutdownListener.java:50)
      ... 96 more
      Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Class org.apache.commons.logging.impl.Log4JLogger does not implement Log
      at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:404)
      at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:502)
      ... 99 more
      Caused by: org.apache.commons.logging.LogConfigurationException: Class org.apache.commons.logging.impl.Log4JLogger does not implement Log
      at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:400)
      ... 100 more