[jboss-dev-forums] [Design of POJO Server] - JBAS-5376: leak of webapp classloader when deployed in ear

Discussion of http://jira.jboss.com/jira/browse/JBAS-5376. I've walked through the deploy/undeploy of an ear with an embedded war, and here's what I see. During deployment of the nested war: AbstractLevelClassLoaderSystemDeployer.createClassLoader(DeploymentUnit) --> VFSDeploymentClassLoaderPolicyModule.registerClassLoaderPolicy(ClassLoaderSystem system, ClassLoader parent) --> DefaultClassLoaderSystem.registerClassLoaderPolicy(String domainName, ParentPolicy parentPolicy, Loader parent, ClassLoaderPolicy policy) --> ClassLoaderSystem.createAndRegisterDomain(String name, ParentPolicy parentPolicy, Loader parent) Here we create a domain for the war and assign param "Loader parent" to the new domain as it's parent. "Loader parent" has a ref to the ear classloader. We then register the new domain with the classloader system. This sets up the chain of references shown in the JIRA description. During undeploy: AbstractLevelClassLoaderSystemDeployer.removeClassLoader(DeploymentUnit unit) --> BaseClassLoaderSystem.unregisterClassLoader(ClassLoader classLoader) --> BaseClassLoaderSystem.unregisterClassLoaderPolicy(ClassLoaderPolicy policy) that removes the ref to the *war's* poliyc/classloader from the war's domain, But the war domain itself is never unregistered from the ClassLoaderSystem. So the ref to the parent is leaked. In an eclipse I don't see any calls at all to ClassLoaderSystem.unregisterDomain(ClassLoaderDomain domain) anywhere. ClassLoaderSystem.shutdown() removes all domains, but that doesn't help here. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4142116#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...