swapnil narvekar [http://community.jboss.org/people/swapnil_narya] created the discussion "Isolated JBoss ClassLoader Issue" To view the discussion, visit: http://community.jboss.org/message/640057#640057 -------------------------------------------------------------- Hello All,      I have *.war* file.File name is '*test.war*'.      I am trying to deploy it on *JBOSS-6.0.0-xxxx-CR1* by isolating classloader for it since I am getting an exception along with stack trace as follows: ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- WARN  [ClassLoaderManager] Unexpected error during load of:org.apache.commons.collections.DoubleOrderedMap$2$1: java.lang.IllegalAccessError: class org.apache.commons.collections.DoubleOrderedMap$2$1 cannot access its superclass org.apache.commons.collections.DoubleOrderedMap$DoubleOrderedMapIterator     at java.lang.ClassLoader.defineClass1(Native Method) [:1.6.0_17]     at java.lang.ClassLoader.defineClass(ClassLoader.java:616) [:1.6.0_17]     at org.jboss.classloader.spi.base.BaseClassLoader.access$200(BaseClassLoader.java:52) [jboss-classloader.jar:2.2.0.Alpha9]     at org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:650) [jboss-classloader.jar:2.2.0.Alpha9]     at org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:609) [jboss-classloader.jar:2.2.0.Alpha9]     at java.security.AccessController.doPrivileged(Native Method) [:1.6.0_17]     at org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:608) [jboss-classloader.jar:2.2.0.Alpha9]     at org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:585) [jboss-classloader.jar:2.2.0.Alpha9]     at org.jboss.classloader.spi.base.BaseDelegateLoader.loadClass(BaseDelegateLoader.java:156) [jboss-classloader.jar:2.2.0.Alpha9]     at org.jboss.classloader.spi.filter.FilteredDelegateLoader.doLoadClass(FilteredDelegateLoader.java:141) [jboss-classloader.jar:2.2.0.Alpha9]     at org.jboss.classloader.spi.filter.FilteredDelegateLoader.loadClass(FilteredDelegateLoader.java:132) [jboss-classloader.jar:2.2.0.Alpha9]     at org.jboss.classloader.spi.base.ClassLoadingTask$ThreadTask.run(ClassLoadingTask.java:461) [jboss-classloader.jar:2.2.0.Alpha9]     at org.jboss.classloader.spi.base.ClassLoaderManager.nextTask(ClassLoaderManager.java:262) [jboss-classloader.jar:2.2.0.Alpha9]     at org.jboss.classloader.spi.base.ClassLoaderManager.process(ClassLoaderManager.java:161) [jboss-classloader.jar:2.2.0.Alpha9]     at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:260) [jboss-classloader.jar:2.2.0.Alpha9]     at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:1152) [jboss-classloader.jar:2.2.0.Alpha9]     at org.jboss.classloader.spi.base.BaseClassLoader.loadClassFromDomain(BaseClassLoader.java:886) [jboss-classloader.jar:2.2.0.Alpha9]     at org.jboss.classloader.spi.base.BaseClassLoader.doLoadClass(BaseClassLoader.java:505) [jboss-classloader.jar:2.2.0.Alpha9]     at org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:450) [jboss-classloader.jar:2.2.0.Alpha9]     at java.lang.ClassLoader.loadClass(ClassLoader.java:248) [:1.6.0_17]     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316) [:1.6.0_17]     at java.lang.Class.forName0(Native Method) [:1.6.0_17]     at java.lang.Class.forName(Class.java:247) [:1.6.0_17]     at org.jboss.reflect.plugins.introspection.IntrospectionTypeInfoFactoryImpl.resolveComplexTypeInfo(IntrospectionTypeInfoFactoryImpl.java:458) [jboss-reflect.jar:2.2.0.Alpha9]     at org.jboss.reflect.plugins.introspection.IntrospectionTypeInfoFactoryImpl.getTypeInfo(IntrospectionTypeInfoFactoryImpl.java:414) [jboss-reflect.jar:2.2.0.Alpha9]     at org.jboss.reflect.plugins.introspection.IntrospectionTypeInfoFactory.getTypeInfo(IntrospectionTypeInfoFactory.java:54) [jboss-reflect.jar:2.2.0.Alpha9]     at org.jboss.config.plugins.AbstractConfiguration.getTypeInfo(AbstractConfiguration.java:121) [jboss-reflect.jar:2.2.0.Alpha9]     at org.jboss.kernel.plugins.config.AbstractKernelConfig.getTypeInfo(AbstractKernelConfig.java:95) [jboss-kernel.jar:2.2.0.Alpha10]     at org.jboss.kernel.plugins.config.AbstractKernelConfigurator.getTypeInfo(AbstractKernelConfigurator.java:102) [jboss-kernel.jar:2.2.0.Alpha10]     at org.jboss.scanning.plugins.visitor.ConfiguratorReflectProvider.getTypeInfo(ConfiguratorReflectProvider.java:47) [:1.0.0.Alpha7]     at org.jboss.scanning.plugins.visitor.CachingReflectProvider.getTypeInfo(CachingReflectProvider.java:52) [:1.0.0.Alpha7]     at org.jboss.scanning.plugins.visitor.ReflectResourceVisitor.getTypeInfo(ReflectResourceVisitor.java:60) [:1.0.0.Alpha7]     at org.jboss.scanning.plugins.visitor.ReflectResourceVisitor.getClassInfo(ReflectResourceVisitor.java:72) [:1.0.0.Alpha7]     at org.jboss.scanning.plugins.visitor.ReflectResourceVisitor.doVisit(ReflectResourceVisitor.java:107) [:1.0.0.Alpha7]     at org.jboss.scanning.plugins.visitor.ReflectResourceVisitor.visit(ReflectResourceVisitor.java:86) [:1.0.0.Alpha7]     at org.jboss.scanning.annotations.plugins.AnnotationsScanningPlugin.visit(AnnotationsScanningPlugin.java:89) [:1.0.0.Alpha7]     at org.jboss.scanning.spi.helpers.ScanningPluginWrapper.visit(ScanningPluginWrapper.java:112) [:1.0.0.Alpha7]     at org.jboss.classloading.plugins.visitor.FederatedResourceVisitor.visit(FederatedResourceVisitor.java:101) [jboss-classloading.jar:2.2.0.Alpha9]     at org.jboss.classloading.plugins.vfs.VFSResourceVisitor.visit(VFSResourceVisitor.java:264) [jboss-classloading-vfs.jar:2.2.0.Alpha9]     at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:407) [jboss-vfs.jar:3.0.0.CR5]     at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:409) [jboss-vfs.jar:3.0.0.CR5]     at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:409) [jboss-vfs.jar:3.0.0.CR5]     at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:409) [jboss-vfs.jar:3.0.0.CR5]     at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:409) [jboss-vfs.jar:3.0.0.CR5]     at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:395) [jboss-vfs.jar:3.0.0.CR5]     at org.jboss.classloading.plugins.vfs.VFSResourceVisitor.visit(VFSResourceVisitor.java:102) [jboss-classloading-vfs.jar:2.2.0.Alpha9]     at org.jboss.deployers.vfs.plugins.classloader.VFSDeploymentClassLoaderPolicyModule.visit(VFSDeploymentClassLoaderPolicyModule.java:181) [:2.2.0.Alpha8]     at org.jboss.scanning.plugins.DeploymentUnitScanner.scan(DeploymentUnitScanner.java:111) [:1.0.0.Alpha7]     at org.jboss.scanning.spi.helpers.UrlScanner.scan(UrlScanner.java:96) [:1.0.0.Alpha7]     at org.jboss.scanning.deployers.ScanningDeployer.deploy(ScanningDeployer.java:90) [:1.0.0.Alpha7]     at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:179) [:2.2.0.Alpha8]     at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1832) [:2.2.0.Alpha8]     at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1550) [:2.2.0.Alpha8]     at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1491) [:2.2.0.Alpha8]     at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:379) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:2044) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:1083) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.AbstractController.executeOrIncrementStateDirectly(AbstractController.java:1322) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1246) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1139) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:939) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:654) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.deployers.plugins.deployers.DeployersImpl.change(DeployersImpl.java:1983) [:2.2.0.Alpha8]     at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:1076) [:2.2.0.Alpha8]     at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:679) [:2.2.0.Alpha8]     at org.jboss.system.server.profileservice.deployers.MainDeployerPlugin.process(MainDeployerPlugin.java:106) [:6.0.0.20101110-CR1]     at org.jboss.profileservice.dependency.ProfileControllerContext$DelegateDeployer.process(ProfileControllerContext.java:130) [:0.1.0.Alpha1]     at org.jboss.profileservice.dependency.ProfileDeployAction.deploy(ProfileDeployAction.java:148) [:0.1.0.Alpha1]     at org.jboss.profileservice.dependency.ProfileDeployAction.installActionInternal(ProfileDeployAction.java:94) [:0.1.0.Alpha1]     at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:54) [jboss-kernel.jar:2.2.0.Alpha10]     at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:42) [jboss-kernel.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:379) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:2044) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:1083) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.AbstractController.executeOrIncrementStateDirectly(AbstractController.java:1322) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1246) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1139) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:939) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:654) [jboss-dependency.jar:2.2.0.Alpha10]     at org.jboss.profileservice.dependency.ProfileServiceController.activate(ProfileServiceController.java:188) [:0.1.0.Alpha1]     at org.jboss.profileservice.AbstractProfileService.activateProfile(AbstractProfileService.java:170) [:0.1.0.Alpha1]     at org.jboss.profileservice.bootstrap.AbstractProfileServiceBootstrap.activate(AbstractProfileServiceBootstrap.java:117) [:0.1.0.Alpha1]     at org.jboss.profileservice.resolver.BasicResolverFactory$ProfileResolverFacade.deploy(BasicResolverFactory.java:89) [:0.1.0.Alpha1]     at org.jboss.profileservice.bootstrap.AbstractProfileServiceBootstrap.start(AbstractProfileServiceBootstrap.java:97) [:0.1.0.Alpha1]     at org.jboss.system.server.profileservice.bootstrap.BasicProfileServiceBootstrap.start(BasicProfileServiceBootstrap.java:130) [:6.0.0.20101110-CR1]     at org.jboss.system.server.profileservice.bootstrap.BasicProfileServiceBootstrap.start(BasicProfileServiceBootstrap.java:56) [:6.0.0.20101110-CR1]     at org.jboss.bootstrap.impl.base.server.AbstractServer.startBootstraps(AbstractServer.java:827) [jboss-bootstrap-impl-base.jar:2.1.0-alpha-5]     at org.jboss.bootstrap.impl.base.server.AbstractServer$StartServerTask.run(AbstractServer.java:417) [jboss-bootstrap-impl-base.jar:2.1.0-alpha-5]     at java.lang.Thread.run(Thread.java:619) [:1.6.0_17] -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------       I have observed that it is because of *commons-collections-3.2.1.jar * in *web-inf\lib* is conflicting with *commons-collections-3.2.jar* which is present in the *default\deployers\jsf.deployer\MyFaces-2.0\jsf-libs* *     *        To remove this exception I have decided to load isolated classloader  for my*  .war* file. I searched , read discussions,forums regarrding it and I have taken following steps.        1. Created *-jboss-classloading.xml* and placed it in WEB-INF               WEB-INF\ jboss-classloading.xml              contents : +   <?xml version="1.0" encoding="UTF-8"?>+ +                   <!--See http://phytodata.wordpress.com/2010/10/21/demystifying-the-jboss5-jboss-c... http://phytodata.wordpress.com/2010/10/21/demystifying-the-jboss5-jboss-c... +                   <classloading xmlns="urn:jboss:classloading:1.0"+ +                                 name="test.war"   + +                                 domain="DefaultDomain"+ +                                 parent-first="false"+ +                                top-level-classloader="true"+ +                                export-all="NON_EMPTY"+ +                                import-all="true">+ +                     </classloading>+ + +        2. Created -*jboss-web.xml* and placed it in WEB-INF               WEB-INF\ jboss-web.xml                Contents: +<?xml version="1.0" encoding="UTF-8"?>+ +                           <jboss-web>+ +                                       <class-loading java2ClassLoadingCompliance="false">+ +                                                 <loader-repository>+ +                                                           com.mastek:archive=test+ +                                                          <loader-repository-config>java2ParentDelegation=false</loader-repository-config>+ +                                                 </loader-repository>+ +                                       </class-loading>+ +                           </jboss-web>+       3. Created - *jboss-app.xm*l and placed it in WEB-INF                WEB-INF\classes\META-INF\jboss-app.xml                Contents : +<?xml version="1.0" encoding="UTF-8"?>+ +                         <jboss-app>+ +                                  <loader-repository>com.mastek:loader=emhada</loader-repository>+ +                         </jboss-app>+               I took above mentioned steps but *still that exception occurs*.               Please throw some light on this .So I Can solve this isolation of ClassLoader successfully. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/640057#640057] Start a new discussion in JBoss Microcontainer at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]