memory leak, org.jboss.jca.core.connectionmanager.pool.idle.IdleRemover$IdleRemoverRunner is keeping deployment in memory after undeployment -------------------------------------------------------------------------------------------------------------------------------------------- Key: WFLY-12676 URL: https://issues.jboss.org/browse/WFLY-12676 Project: WildFly Issue Type: Bug Components: JCA Affects Versions: 18.0.0.Final Reporter: Scott Marlow Assignee: Stefano Maestri Priority: Blocker Fix For: 19.0.0.Beta1 Attachments: 2lc.jar, java_pid12802.0001.zip, jcaleakmarlow.txt As part of looking at [WFLY-12671], I found that org.jboss.jca.core.connectionmanager.pool.idle.IdleRemover$IdleRemoverRunner is leaking the application classloader (after undeployment) via org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory originalTCCL being kept after undeployment. See attached jcaleakmarlow.txt (also attached to [WFLY-12671]), which shows the leak. I tried waiting a few minutes after undeployment and the leak was still there. I also tried an even simpler app (2lc.jar) and still there is a leak. I also attached the heapdump (java_pid12802.0001.zip) To recreate: * Deploy simple (no app code will be executed) 2lc.jar app. * Undeploy by doing "rm 2lc.jar.deployed" in wildfly/standalone/deployments * Look at memory with MAT or other memory leak tool.