[jboss-jira] [JBoss JIRA] (JBRULES-3303) Memory leak in RuleBaseEventSupport.listeners when loading StatefulKnowledgeSession - Test Attached

[ https://issues.jboss.org/browse/JBRULES-3303?page=com.atlassian.jira.plug... ] Thomas Swindells commented on JBRULES-3303: ------------------------------------------- The bug appears to be org.drools.marshalling.impl.InputMarshaller.readSession(MarshallerReaderContext, int, ExecutorService, Environment, SessionConfiguration) line 204. session.setKnowledgeRuntime(new StatefulKnowledgeSessionImpl(session)); The constructor for StatefulKnowledgeSessionImpl explicitly calls session.setKnowledgeRuntime. This creates a ProcessRuntimeImpl storing it in processRuntime. The processRuntimeImple adds a knowledgebase listener to the knowledgebase. The outer call then calls session.setKnowledgeRuntime for a second time. This recreates a new ProcessRuntimeImpl and blindly overwrites the processRuntime field. The new processRuntime will register a new listener on the knowledge base. As the reference to the first processRuntime has been lost only the second listener is removed when the session is disposed. The simplest solution would be to not explicitly call session.setKnowledgeRuntime. A more robust solution would be to fix setKnowledgeRuntime to cope with being called multiple times. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.jboss.org/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira