[seam-issues] [JBoss JIRA] (JBSEAM-5000) EJB proxy class memory leak using pageflows

EJB proxy class memory leak using pageflows ------------------------------------------- Key: JBSEAM-5000 URL: https://issues.jboss.org/browse/JBSEAM-5000 Project: Seam 2 Issue Type: Bug Components: BPM, Core, EJB3, Performance and Scalability Affects Versions: 2.2.1.Final Environment: Windows 2003, WebLogic Reporter: Jamie Cavanaugh Attachments: memleak-test.zip We have found a PermGen leak when an EJB is accessed during a pageflow. Attached is a sample project that reproduces the issue. It appears to happen only if a conversation scoped component that injects a remote EJB is referenced by an action on a pageflow transition. It also occurs if the component access the EJB via a JNDI lookup. We can reproduce it on WebLogic, but not on GlassFish. However it seems related to SEAM and pageflows, as it only occurs during a pageflow, and changing when the EJB is looked up affects whether or not the leak will be present. Steps to reproduce (using example app): 1) deploy jsf library (follow standard instructions for weblogic) 2) deploy the two EARs (memleak-ejb-ear-0.0.1-SNAPSHOT.ear and memleak-web-ear-0.0.1-SNAPSHOT.ear) 3) access the sample web-app at /web/home.seam Clicking the buttons goes through a cycle of three pages that exercise the code that produces the leak. There's a jmeter test plan included. You can see the leaked classes (they look like: class memleak/MyEJBImpl_ehtkps_MyEJBImpl_1031_WLStub) by running jrcmd print_class_summary, or if using a Sun JVM, by using a tool like VisualVM.