Memory leak in KieScanner ------------------------- Key: DROOLS-1199 URL: https://issues.jboss.org/browse/DROOLS-1199 Project: Drools Issue Type: Bug Components: core engine Affects Versions: 6.4.0.Final Reporter: Viacheslav Krot Assignee: Mario Fusco Fix For: 7.0.0.Beta1 I'm not sure, but it seems there is a memory leak in KieScanner, not in scanner directly, but somewhere in plexus used internally. If you start KieScanner with version = LATEST, start it with interval say 1 second and sample memory with visualvm (or any other), you can watch number of instances org.eclipse.sisu.plexus.* growing over time. And they cannot be garbage collected - memory root is timer thread. This happens in drools 6.4.0, in 6.3.0 this issue was absent. Eventually application fails with OOM. As a workaround we call KieScanner#scan manually in a separate thread pool that is recreated from time to time.