[jboss-jira] [JBoss JIRA] Created: (JBRULES-2841) BinaryHeapQueueAgendaGroup fails to return top salience item

[k s (JIRA)]

BinaryHeapQueueAgendaGroup fails to return top salience item
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                 Key: JBRULES-2841
                 URL: https://issues.jboss.org/browse/JBRULES-2841
             Project: Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: drools-core
    Affects Versions: 5.1.1.FINAL
            Reporter: k s
            Assignee: Mark Proctor


We have come across a case where the rules engine does not fire the top priority (top salience) rule. After a lot of careful debugging, it seems that the BinaryHeapQueueAgendaGroup implementation (and most likely the supporting BinaryHeapQueue) has a bug. It is not a common case and it was hard to reproduce. We have put together a junit test to show the problem. The test "replays" the trace from the case where we show the error (sparing you from all the complexity of the actual rules and produced it). I will attach the JUnit test and the trace file that drives the test.



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