[ https://issues.jboss.org/browse/DROOLS-751?page=com.atlassian.jira.plugin... ] Tibor Zimányi commented on DROOLS-751: -------------------------------------- Found because of failed test (MultithreadTest): java.lang.NullPointerException at org.drools.core.common.LeftTupleSetsImpl.removeInsert(LeftTupleSetsImpl.java:136) at org.drools.core.common.LeftTupleSetsImpl.addDelete(LeftTupleSetsImpl.java:86) at org.drools.core.common.SynchronizedLeftTupleSets.addDelete(SynchronizedLeftTupleSets.java:20) at org.drools.core.reteoo.LeftInputAdapterNode.doDeleteSegmentMemory(LeftInputAdapterNode.java:340) at org.drools.core.reteoo.LeftInputAdapterNode.doDeleteObject(LeftInputAdapterNode.java:302) at org.drools.core.reteoo.LeftInputAdapterNode.retractLeftTuple(LeftInputAdapterNode.java:414) at org.drools.core.reteoo.ObjectTypeNode.doRetractObject(ObjectTypeNode.java:354) at org.drools.core.reteoo.ObjectTypeNode.retractObject(ObjectTypeNode.java:337) at org.drools.core.reteoo.EntryPointNode.retractObject(EntryPointNode.java:381) at org.drools.core.common.NamedEntryPoint.delete(NamedEntryPoint.java:615) at org.drools.core.impl.StatefulKnowledgeSessionImpl.delete(StatefulKnowledgeSessionImpl.java:1517) at org.drools.core.impl.StatefulKnowledgeSessionImpl.retract(StatefulKnowledgeSessionImpl.java:1502) at org.drools.compiler.integrationtests.MultithreadTest$2.call(MultithreadTest.java:92) at org.drools.compiler.integrationtests.MultithreadTest$2.call(MultithreadTest.java:86) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) -- This message was sent by Atlassian JIRA (v6.3.11#6341)