[jboss-jira] [JBoss JIRA] (JBRULES-2882) NPE in EqualityEvaluatorsDefinition$StringEqualEvaluator.evaluateCachedLeft

NPE in EqualityEvaluatorsDefinition$StringEqualEvaluator.evaluateCachedLeft --------------------------------------------------------------------------- Key: JBRULES-2882 URL: https://issues.jboss.org/browse/JBRULES-2882 Project: Drools Issue Type: Bug Security Level: Public(Everyone can see) Components: drools-core (expert) Affects Versions: 5.1.0.FINAL Environment: OS: Win 7 Professional 64 Bit, 64 Bit Java, Reporter: Ravi Bhatt Assignee: Edson Tirelli Labels: Manager, Partition, task Fix For: 6.0.0.Beta1 While working with rules with partitioning turned on. KnowledgeBaseConfiguration config = KnowledgeBaseFactory.newKnowledgeBaseConfiguration(); config.setOption( MultithreadEvaluationOption.YES ); conf.setOption( MaxThreadsOption.get(5) ); Once we start inserting objects into the KSession, somewhere in the middle it throws this error: Partition task manager caught an unexpected exception: null Drools is capturing the exception to avoid thread death. Please report stack trace to development team. java.lang.NullPointerException at org.drools.base.evaluators.EqualityEvaluatorsDefinition$StringEqualEvaluator.evaluateCachedLeft(EqualityEvaluatorsDefinition.java:1984) at org.drools.rule.VariableRestriction.isAllowedCachedLeft(VariableRestriction.java:109) at org.drools.rule.VariableConstraint.isAllowedCachedLeft(VariableConstraint.java:115) at org.drools.common.SingleBetaConstraints.isAllowedCachedLeft(SingleBetaConstraints.java:142) at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:274) at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:138) at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:189) at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:64) at org.drools.reteoo.JoinNode.assertLeftTuple(JoinNode.java:85) at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:189) at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:64) at org.drools.reteoo.FromNode.checkConstraintsAndPropagate(FromNode.java:279) at org.drools.reteoo.FromNode.assertLeftTuple(FromNode.java:138) at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:189) at org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:64) at org.drools.reteoo.JoinNode.assertObject(JoinNode.java:128) at org.drools.reteoo.PartitionTaskManager$FactAssertAction.execute(PartitionTaskManager.java:274) at org.drools.reteoo.PartitionTaskManager$PartitionTask.run(PartitionTaskManager.java:118) at org.drools.concurrent.ExternalExecutorService$ObservableRunnable.run(ExternalExecutorService.java:453) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662)