Reformat my mail so it's readable ... ---- We've upgraded Drools 5.1 to 5.4.0.Final. Everything is great with new incremental build change-set. However, occasionally we get this error (so far, 2 different stack trace) java.lang.UnsupportedOperationException at org.drools.reteoo.BaseLeftTuple.getObject(BaseLeftTuple.java:589) at org.drools.reteoo.RuleTerminalNode.modifyLeftTuple(RuleTerminalNode.java:273) at org.drools.reteoo.LeftTupleSource.doModifyLeftTuple(LeftTupleSource.java:297) at org.drools.reteoo.AbstractTerminalNode.modifyLeftTuple(AbstractTerminalNode.java:104) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateModifyObject(CompositeLeftTupleSinkAdapter.java:260) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.propagateModifyObject(CompositeLeftTupleSinkAdapter.java:275) at org.drools.reteoo.LeftInputAdapterNode.modifyObject(LeftInputAdapterNode.java:170) at org.drools.reteoo.SingleObjectSinkAdapter.propagateModifyObject(SingleObjectSinkAdapter.java:68) at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157) at org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507) at org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432) at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157) at org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507) at org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:421) at org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:314) at org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:265) at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:470) at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:370) at org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:317) at org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:312) AND java.lang.UnsupportedOperationException at org.drools.reteoo.BaseLeftTuple.getPrevious(BaseLeftTuple.java:478) at org.drools.core.util.LeftTupleList.remove(LeftTupleList.java:84) at org.drools.core.util.LeftTupleList.removeAdd(LeftTupleList.java:65) at org.drools.reteoo.JoinNode.modifyLeftTuple(JoinNode.java:302) at org.drools.reteoo.LeftTupleSource.doModifyLeftTuple(LeftTupleSource.java:297) at org.drools.reteoo.LeftTupleSource.modifyLeftTuple(LeftTupleSource.java:271) at org.drools.reteoo.JoinNode.modifyLeftTuple(JoinNode.java:429) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateModifyObject(CompositeLeftTupleSinkAdapter.java:260) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.propagateModifyObject(CompositeLeftTupleSinkAdapter.java:275) at org.drools.reteoo.LeftInputAdapterNode.modifyObject(LeftInputAdapterNode.java:170) at org.drools.reteoo.SingleObjectSinkAdapter.propagateModifyObject(SingleObjectSinkAdapter.java:68) at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157) at org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507) at org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432) at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157) at org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507) at org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:421) at org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:314) at org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:265) at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:470) at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:370) at org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:317) at org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:312) I've searched around and saw https://issues.jboss.org/browse/JBRULES-3713. I've downloaded the test program and load our rules but can't reproduce the issue. The similarity between our rules and rules in the test case is that we do have a rule matched and perform an update on the fact. With my limited knowledge of drools and how it works internally, i've run out of ideas. SOS, please help!!! Regards, Trung -- View this message in context: http://drools.46999.n3.nabble.com/UnsupportedOperationException-intermite... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

We've upgraded Drools 5.1 to 5.4.0.Final. Everything is great with new incremental build change-set. However, occasionally we get this error (so far, 2 different stack trace) java.lang.UnsupportedOperationException at org.drools.reteoo.BaseLeftTuple.getObject(BaseLeftTuple.java:589) at org.drools.reteoo.RuleTerminalNode.modifyLeftTuple(RuleTerminalNode.java:273) at org.drools.reteoo.LeftTupleSource.doModifyLeftTuple(LeftTupleSource.java:297) at org.drools.reteoo.AbstractTerminalNode.modifyLeftTuple(AbstractTerminalNode.java:104) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateModifyObject(CompositeLeftTupleSinkAdapter.java:260) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.propagateModifyObject(CompositeLeftTupleSinkAdapter.java:275) at org.drools.reteoo.LeftInputAdapterNode.modifyObject(LeftInputAdapterNode.java:170) at org.drools.reteoo.SingleObjectSinkAdapter.propagateModifyObject(SingleObjectSinkAdapter.java:68) at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157) at org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507) at org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432) at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157) at org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507) at org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:421) at org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:314) at org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:265) at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:470) at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:370) at org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:317) at org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:312) AND java.lang.UnsupportedOperationException at org.drools.reteoo.BaseLeftTuple.getPrevious(BaseLeftTuple.java:478) at org.drools.core.util.LeftTupleList.remove(LeftTupleList.java:84) at org.drools.core.util.LeftTupleList.removeAdd(LeftTupleList.java:65) at org.drools.reteoo.JoinNode.modifyLeftTuple(JoinNode.java:302) at org.drools.reteoo.LeftTupleSource.doModifyLeftTuple(LeftTupleSource.java:297) at org.drools.reteoo.LeftTupleSource.modifyLeftTuple(LeftTupleSource.java:271) at org.drools.reteoo.JoinNode.modifyLeftTuple(JoinNode.java:429) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateModifyObject(CompositeLeftTupleSinkAdapter.java:260) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.propagateModifyObject(CompositeLeftTupleSinkAdapter.java:275) at org.drools.reteoo.LeftInputAdapterNode.modifyObject(LeftInputAdapterNode.java:170) at org.drools.reteoo.SingleObjectSinkAdapter.propagateModifyObject(SingleObjectSinkAdapter.java:68) at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157) at org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507) at org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:432) at org.drools.reteoo.AlphaNode.modifyObject(AlphaNode.java:157) at org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:507) at org.drools.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:421) at org.drools.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:314) at org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:265) at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:470) at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:370) at org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:317) at org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:312) I've searched around and saw https://issues.jboss.org/browse/JBRULES-3713. I've downloaded the test program and load our rules but can't reproduce the issue. The similarity between our rules and rules in the test case is that we do have a rule matched and perform an update on the fact. With my limited knowledge of drools and how it works internally, i've run out of ideas. SOS, please help!!! Regards, Trung View this message in context: UnsupportedOperationException intermitently Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Thanks Mark. Regarding the scenario you're mentioned: "If some how a LeftTuple is created by one node, but used by a different node" What could be reasons causing the logic running into this? Will it be something with multi-threaded environment or incremental change-set update? -- View this message in context: http://drools.46999.n3.nabble.com/UnsupportedOperationException-intermite... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users