Null pointer exception with multithread enabled ----------------------------------------------- Key: JBRULES-3167 URL: https://issues.jboss.org/browse/JBRULES-3167 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: drools-core (expert) Affects Versions: 5.2.0.Final Reporter: Pascal de Kloe Assignee: Mark Proctor ******************************************************************************************************* Partition task manager caught an unexpected exception: null Drools is capturing the exception to avoid thread death. Please report stack trace to development team. java.lang.NullPointerException at org.drools.core.util.LeftTupleIndexHashTable.remove(LeftTupleIndexHashTable.java:285) at org.drools.reteoo.NotNode.assertObject(NotNode.java:144) at org.drools.reteoo.PartitionTaskManager$FactAssertAction.execute(PartitionTaskManager.java:272) at org.drools.reteoo.PartitionTaskManager$PartitionTask.run(PartitionTaskManager.java:116) at org.drools.concurrent.ExternalExecutorService$ObservableRunnable.run(ExternalExecutorService.java:443) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira