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Isolated JBoss ClassLoader Issue
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created by <a href="http://community.jboss.org/people/swapnil_narya">swapnil narvekar</a> in <i>JBoss Microcontainer</i> - <a href="http://community.jboss.org/message/640057#640057">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hello All,</p><p>     I have <strong>.war </strong>file.File name is '<strong>test.war</strong>'.</p><p>     </p><p>     I am trying to deploy it on <strong>JBOSS-6.0.0-xxxx-CR1</strong> by isolating classloader for it since I am getting an exception along with stack trace as follows:</p><p>-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>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</p><p>    at java.lang.ClassLoader.defineClass1(Native Method) [:1.6.0_17]</p><p>    at java.lang.ClassLoader.defineClass(ClassLoader.java:616) [:1.6.0_17]</p><p>    at org.jboss.classloader.spi.base.BaseClassLoader.access$200(BaseClassLoader.java:52) [jboss-classloader.jar:2.2.0.Alpha9]</p><p>    at org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:650) [jboss-classloader.jar:2.2.0.Alpha9]</p><p>    at org.jboss.classloader.spi.base.BaseClassLoader$2.run(BaseClassLoader.java:609) [jboss-classloader.jar:2.2.0.Alpha9]</p><p>    at java.security.AccessController.doPrivileged(Native Method) [:1.6.0_17]</p><p>    at org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:608) [jboss-classloader.jar:2.2.0.Alpha9]</p><p>    at org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:585) [jboss-classloader.jar:2.2.0.Alpha9]</p><p>    at org.jboss.classloader.spi.base.BaseDelegateLoader.loadClass(BaseDelegateLoader.java:156) [jboss-classloader.jar:2.2.0.Alpha9]</p><p>    at org.jboss.classloader.spi.filter.FilteredDelegateLoader.doLoadClass(FilteredDelegateLoader.java:141) [jboss-classloader.jar:2.2.0.Alpha9]</p><p>    at org.jboss.classloader.spi.filter.FilteredDelegateLoader.loadClass(FilteredDelegateLoader.java:132) [jboss-classloader.jar:2.2.0.Alpha9]</p><p>    at org.jboss.classloader.spi.base.ClassLoadingTask$ThreadTask.run(ClassLoadingTask.java:461) [jboss-classloader.jar:2.2.0.Alpha9]</p><p>    at org.jboss.classloader.spi.base.ClassLoaderManager.nextTask(ClassLoaderManager.java:262) [jboss-classloader.jar:2.2.0.Alpha9]</p><p>    at org.jboss.classloader.spi.base.ClassLoaderManager.process(ClassLoaderManager.java:161) [jboss-classloader.jar:2.2.0.Alpha9]</p><p>    at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:260) [jboss-classloader.jar:2.2.0.Alpha9]</p><p>    at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:1152) [jboss-classloader.jar:2.2.0.Alpha9]</p><p>    at org.jboss.classloader.spi.base.BaseClassLoader.loadClassFromDomain(BaseClassLoader.java:886) [jboss-classloader.jar:2.2.0.Alpha9]</p><p>    at org.jboss.classloader.spi.base.BaseClassLoader.doLoadClass(BaseClassLoader.java:505) [jboss-classloader.jar:2.2.0.Alpha9]</p><p>    at org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:450) [jboss-classloader.jar:2.2.0.Alpha9]</p><p>    at java.lang.ClassLoader.loadClass(ClassLoader.java:248) [:1.6.0_17]</p><p>    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316) [:1.6.0_17]</p><p>    at java.lang.Class.forName0(Native Method) [:1.6.0_17]</p><p>    at java.lang.Class.forName(Class.java:247) [:1.6.0_17]</p><p>    at org.jboss.reflect.plugins.introspection.IntrospectionTypeInfoFactoryImpl.resolveComplexTypeInfo(IntrospectionTypeInfoFactoryImpl.java:458) [jboss-reflect.jar:2.2.0.Alpha9]</p><p>    at org.jboss.reflect.plugins.introspection.IntrospectionTypeInfoFactoryImpl.getTypeInfo(IntrospectionTypeInfoFactoryImpl.java:414) [jboss-reflect.jar:2.2.0.Alpha9]</p><p>    at org.jboss.reflect.plugins.introspection.IntrospectionTypeInfoFactory.getTypeInfo(IntrospectionTypeInfoFactory.java:54) [jboss-reflect.jar:2.2.0.Alpha9]</p><p>    at org.jboss.config.plugins.AbstractConfiguration.getTypeInfo(AbstractConfiguration.java:121) [jboss-reflect.jar:2.2.0.Alpha9]</p><p>    at org.jboss.kernel.plugins.config.AbstractKernelConfig.getTypeInfo(AbstractKernelConfig.java:95) [jboss-kernel.jar:2.2.0.Alpha10]</p><p>    at org.jboss.kernel.plugins.config.AbstractKernelConfigurator.getTypeInfo(AbstractKernelConfigurator.java:102) [jboss-kernel.jar:2.2.0.Alpha10]</p><p>    at org.jboss.scanning.plugins.visitor.ConfiguratorReflectProvider.getTypeInfo(ConfiguratorReflectProvider.java:47) [:1.0.0.Alpha7]</p><p>    at org.jboss.scanning.plugins.visitor.CachingReflectProvider.getTypeInfo(CachingReflectProvider.java:52) [:1.0.0.Alpha7]</p><p>    at org.jboss.scanning.plugins.visitor.ReflectResourceVisitor.getTypeInfo(ReflectResourceVisitor.java:60) [:1.0.0.Alpha7]</p><p>    at org.jboss.scanning.plugins.visitor.ReflectResourceVisitor.getClassInfo(ReflectResourceVisitor.java:72) [:1.0.0.Alpha7]</p><p>    at org.jboss.scanning.plugins.visitor.ReflectResourceVisitor.doVisit(ReflectResourceVisitor.java:107) [:1.0.0.Alpha7]</p><p>    at org.jboss.scanning.plugins.visitor.ReflectResourceVisitor.visit(ReflectResourceVisitor.java:86) [:1.0.0.Alpha7]</p><p>    at org.jboss.scanning.annotations.plugins.AnnotationsScanningPlugin.visit(AnnotationsScanningPlugin.java:89) [:1.0.0.Alpha7]</p><p>    at org.jboss.scanning.spi.helpers.ScanningPluginWrapper.visit(ScanningPluginWrapper.java:112) [:1.0.0.Alpha7]</p><p>    at org.jboss.classloading.plugins.visitor.FederatedResourceVisitor.visit(FederatedResourceVisitor.java:101) [jboss-classloading.jar:2.2.0.Alpha9]</p><p>    at org.jboss.classloading.plugins.vfs.VFSResourceVisitor.visit(VFSResourceVisitor.java:264) [jboss-classloading-vfs.jar:2.2.0.Alpha9]</p><p>    at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:407) [jboss-vfs.jar:3.0.0.CR5]</p><p>    at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:409) [jboss-vfs.jar:3.0.0.CR5]</p><p>    at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:409) [jboss-vfs.jar:3.0.0.CR5]</p><p>    at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:409) [jboss-vfs.jar:3.0.0.CR5]</p><p>    at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:409) [jboss-vfs.jar:3.0.0.CR5]</p><p>    at org.jboss.vfs.VirtualFile.visit(VirtualFile.java:395) [jboss-vfs.jar:3.0.0.CR5]</p><p>    at org.jboss.classloading.plugins.vfs.VFSResourceVisitor.visit(VFSResourceVisitor.java:102) [jboss-classloading-vfs.jar:2.2.0.Alpha9]</p><p>    at org.jboss.deployers.vfs.plugins.classloader.VFSDeploymentClassLoaderPolicyModule.visit(VFSDeploymentClassLoaderPolicyModule.java:181) [:2.2.0.Alpha8]</p><p>    at org.jboss.scanning.plugins.DeploymentUnitScanner.scan(DeploymentUnitScanner.java:111) [:1.0.0.Alpha7]</p><p>    at org.jboss.scanning.spi.helpers.UrlScanner.scan(UrlScanner.java:96) [:1.0.0.Alpha7]</p><p>    at org.jboss.scanning.deployers.ScanningDeployer.deploy(ScanningDeployer.java:90) [:1.0.0.Alpha7]</p><p>    at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:179) [:2.2.0.Alpha8]</p><p>    at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1832) [:2.2.0.Alpha8]</p><p>    at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1550) [:2.2.0.Alpha8]</p><p>    at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1491) [:2.2.0.Alpha8]</p><p>    at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:379) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:2044) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:1083) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.AbstractController.executeOrIncrementStateDirectly(AbstractController.java:1322) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1246) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1139) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:939) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:654) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.deployers.plugins.deployers.DeployersImpl.change(DeployersImpl.java:1983) [:2.2.0.Alpha8]</p><p>    at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:1076) [:2.2.0.Alpha8]</p><p>    at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:679) [:2.2.0.Alpha8]</p><p>    at org.jboss.system.server.profileservice.deployers.MainDeployerPlugin.process(MainDeployerPlugin.java:106) [:6.0.0.20101110-CR1]</p><p>    at org.jboss.profileservice.dependency.ProfileControllerContext$DelegateDeployer.process(ProfileControllerContext.java:130) [:0.1.0.Alpha1]</p><p>    at org.jboss.profileservice.dependency.ProfileDeployAction.deploy(ProfileDeployAction.java:148) [:0.1.0.Alpha1]</p><p>    at org.jboss.profileservice.dependency.ProfileDeployAction.installActionInternal(ProfileDeployAction.java:94) [:0.1.0.Alpha1]</p><p>    at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:54) [jboss-kernel.jar:2.2.0.Alpha10]</p><p>    at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:42) [jboss-kernel.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:379) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:2044) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:1083) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.AbstractController.executeOrIncrementStateDirectly(AbstractController.java:1322) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1246) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1139) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:939) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:654) [jboss-dependency.jar:2.2.0.Alpha10]</p><p>    at org.jboss.profileservice.dependency.ProfileServiceController.activate(ProfileServiceController.java:188) [:0.1.0.Alpha1]</p><p>    at org.jboss.profileservice.AbstractProfileService.activateProfile(AbstractProfileService.java:170) [:0.1.0.Alpha1]</p><p>    at org.jboss.profileservice.bootstrap.AbstractProfileServiceBootstrap.activate(AbstractProfileServiceBootstrap.java:117) [:0.1.0.Alpha1]</p><p>    at org.jboss.profileservice.resolver.BasicResolverFactory$ProfileResolverFacade.deploy(BasicResolverFactory.java:89) [:0.1.0.Alpha1]</p><p>    at org.jboss.profileservice.bootstrap.AbstractProfileServiceBootstrap.start(AbstractProfileServiceBootstrap.java:97) [:0.1.0.Alpha1]</p><p>    at org.jboss.system.server.profileservice.bootstrap.BasicProfileServiceBootstrap.start(BasicProfileServiceBootstrap.java:130) [:6.0.0.20101110-CR1]</p><p>    at org.jboss.system.server.profileservice.bootstrap.BasicProfileServiceBootstrap.start(BasicProfileServiceBootstrap.java:56) [:6.0.0.20101110-CR1]</p><p>    at org.jboss.bootstrap.impl.base.server.AbstractServer.startBootstraps(AbstractServer.java:827) [jboss-bootstrap-impl-base.jar:2.1.0-alpha-5]</p><p>    at org.jboss.bootstrap.impl.base.server.AbstractServer$StartServerTask.run(AbstractServer.java:417) [jboss-bootstrap-impl-base.jar:2.1.0-alpha-5]</p><p>    at java.lang.Thread.run(Thread.java:619) [:1.6.0_17]</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>      I have observed that it is because of <span style="font-family: book antiqua,palatino;"><strong>commons-collections-3.2.1.jar  </strong>in<strong> web-inf\lib</strong> is conflicting with </span><strong>commons-collections-3.2.jar</strong> which is present in the <strong>default\deployers\jsf.deployer\MyFaces-2.0\jsf-libs </strong></p><p><strong>      </strong></p><p>       To remove this exception I have decided to load isolated classloader  for my<strong>  .war </strong>file.</p><p>I searched , read discussions,forums regarrding it and I have taken following steps.</p><p>    </p><p>       1. Created <strong>-jboss-classloading.xml</strong> and placed it in WEB-INF</p><p>              WEB-INF\ jboss-classloading.xml</p><p>              </p><p>             contents :</p><p>     </p><p>                <em>   <?xml version="1.0" encoding="UTF-8"?></em></p><p><em><span>                   <!--See </span><a class="jive-link-external-small" href="http://phytodata.wordpress.com/2010/10/21/demystifying-the-jboss5-jboss-classloading-xml-file--" target="_blank">http://phytodata.wordpress.com/2010/10/21/demystifying-the-jboss5-jboss-classloading-xml-file--</a><span>></span></em></p><p><em>                   <classloading xmlns="urn:jboss:classloading:1.0"</em></p><p><em>                                 name="test.war"    </em></p><p><em>                                 domain="DefaultDomain"</em></p><p><em>                                 parent-first="false"</em></p><p><em>                                top-level-classloader="true"</em></p><p><em>                                export-all="NON_EMPTY"</em></p><p><em>                                import-all="true"></em></p><p><em>                     </classloading></em></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><em><br/></em></p><p>       2. Created -<strong>jboss-web.xml</strong> and placed it in WEB-INF</p><p>              WEB-INF\ jboss-web.xml</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>               Contents: </p><p>               </p><p>                           <em><?xml version="1.0" encoding="UTF-8"?></em></p><p><em>                           <jboss-web></em></p><p><em>                                       <class-loading java2ClassLoadingCompliance="false"></em></p><p><em>                                                 <loader-repository></em></p><p><em>                                                           com.mastek:archive=test</em></p><p><em>                                                          <loader-repository-config>java2ParentDelegation=false</loader-repository-config></em></p><p><em>                                                 </loader-repository></em></p><p><em>                                       </class-loading></em></p><p><em>                           </jboss-web></em></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>         </p><p>      3. Created - <strong>jboss-app.xm</strong>l and placed it in WEB-INF</p><p>               WEB-INF\classes\META-INF\jboss-app.xml</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>               Contents :</p><p>         </p><p>                         <em><?xml version="1.0" encoding="UTF-8"?></em></p><p><em>                         <jboss-app></em></p><p><em>                                  <loader-repository>com.mastek:loader=emhada</loader-repository></em></p><p><em>                         </jboss-app></em></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>      </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>              I took above mentioned steps but <span style="color: #ff0000;"><strong>still that exception occurs</strong></span>.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>              Please throw some light on this .So I Can solve this isolation of ClassLoader successfully.</p></div>
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