[jboss-jira] [JBoss JIRA] (DROOLS-1199) Memory leak in KieScanner

[Viacheslav Krot (JIRA)]

Viacheslav Krot created DROOLS-1199:
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             Summary: Memory leak in KieScanner
                 Key: DROOLS-1199
                 URL: https://issues.jboss.org/browse/DROOLS-1199
             Project: Drools
          Issue Type: Bug
            Reporter: Viacheslav Krot
            Assignee: Mark Proctor


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.



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