Drools NPE on SlidingTimeWindowComparator ----------------------------------------- Key: JBRULES-3269 URL: https://issues.jboss.org/browse/JBRULES-3269 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Affects Versions: 5.3.0.Final Reporter: Diego Naya Assignee: Mark Proctor Exception in thread "Thread-0" org.drools.RuntimeDroolsException: Unexpected exception executing action org.drools.rule.SlidingTimeWindow$BehaviorExpireWMAction@1737712 at org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:973) at org.drools.common.DefaultAgenda.fireUntilHalt(DefaultAgenda.java:1231) at org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:753) at org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:729) at org.drools.impl.StatefulKnowledgeSessionImpl.fireUntilHalt(StatefulKnowledgeSessionImpl.java:234) at com.sample.DroolsTest$1.run(DroolsTest.java:35) Caused by: java.lang.NullPointerException at org.drools.rule.SlidingTimeWindow$SlidingTimeWindowComparator.compare(SlidingTimeWindow.java:232) at org.drools.rule.SlidingTimeWindow$SlidingTimeWindowComparator.compare(SlidingTimeWindow.java:227) at java.util.PriorityQueue.siftDownUsingComparator(PriorityQueue.java:661) at java.util.PriorityQueue.siftDown(PriorityQueue.java:629) at java.util.PriorityQueue.poll(PriorityQueue.java:540) at java.util.AbstractQueue.remove(AbstractQueue.java:114) at org.drools.rule.SlidingTimeWindow.expireTuples(SlidingTimeWindow.java:164) at org.drools.rule.SlidingTimeWindow$BehaviorExpireWMAction.execute(SlidingTimeWindow.java:431) at org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:971) ... 5 more -- 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