As far as I can see, a ClassLoader leak can occur through org.jboss.util.TimedCachePolicy.resolutionTimer, preventing ClassLoader and classes from unloading when an EAR is undeployed.
I have debugged undeploy problem in my EAR with jmap -dump and jhat, and one of the reasons preventing ClassLoader from unloading is this path I see in jhat: Static reference from org.jboss.util.TimedCachePolicy.resolutionTimer (from class org.jboss.util.TimedCachePolicy) : --> [EMAIL PROTECTED] (40 bytes) (field thread:) --> [EMAIL PROTECTED] (173 bytes) (field contextClassLoader:) --> [EMAIL PROTECTED] (296 bytes) (field parent:) --> [EMAIL PROTECTED] (123 bytes) (field parent:) --> [EMAIL PROTECTED] (203 bytes) The Timer object in the trace has only one TimedCachePolicy job in its queue, and that object is referenced from [EMAIL PROTECTED] (103 bytes) : field domainCache [EMAIL PROTECTED] (32 bytes) : field authenticationCache So I'm guessing that this happens: when I first access my web application requiring authentication, JBoss creates the Timer needed to clean authCache and domainCache. This Timer is created from the context of my web app -> the TimerThread java.util.Timer creates inherits the current context ClassLoader, that is my ClassLoader. Boom. As a side issue, a peculiar thing is that I have disabled authenticationCache with 0 for JaasSecurityManagerService. Even more peculiar, the authenticationCache actually does contain the principal and credentials I used to log in to the web app. That is, authCache can't be disabled the way it is advertised. A possible work around is to access something else, like jmx-console first, causing the Timer to be created in that context. I'll try that shortly. There is also another ClassLoader leak that comes from Tomcat. See https://issues.apache.org/bugzilla/show_bug.cgi?id=44389 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4134171#4134171 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4134171 _______________________________________________ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
