*Drools 5.4.0.Final* Im running a *query* against Drools It is running for many hours and doesnt seem to return. This happens in 5% on production. Probably some race problem? ... query "distributeForMove" (long pSpmaId) $spma: SubPlanningMatrixOpt ( ..., spmaId == pSpmaId, ...) ... On suspending the thread I see that Drools tries to resolve "pSpmaId" as a class Thread is in status "RUNNABLE" "jmsWaitingMessageListenerContainer-1" prio=10 tid=0x00002aaed49ad000 nid=0x1719 runnable [0x00000000440e1000] java.lang.Thread.State: RUNNABLE at java.util.HashMap.getEntry(Unknown Source) at java.util.HashMap.containsKey(Unknown Source) at org.drools.util.CompositeClassLoader$CachingLoader.load(CompositeClassLoader.java:244) at org.drools.util.CompositeClassLoader$CachingLoader.load(CompositeClassLoader.java:237) at org.drools.util.CompositeClassLoader.loadClass(CompositeClassLoader.java:88) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown Source) at org.mvel2.ParserConfiguration.checkForDynamicImport(ParserConfiguration.java:159) at org.mvel2.ParserConfiguration.hasImport(ParserConfiguration.java:187) at org.mvel2.ParserContext.hasImport(ParserContext.java:352) at org.mvel2.compiler.AbstractParser.createPropertyToken(AbstractParser.java:1331) at org.mvel2.compiler.AbstractParser.nextToken(AbstractParser.java:836) at org.mvel2.compiler.ExpressionCompiler._compile(ExpressionCompiler.java:128) at org.mvel2.compiler.ExpressionCompiler.compile(ExpressionCompiler.java:62) at org.mvel2.MVEL.compileExpression(MVEL.java:810) at org.drools.rule.constraint.MvelConditionEvaluator.<init>(MvelConditionEvaluator.java:34) at org.drools.rule.constraint.MvelConstraint.createMvelConditionEvaluator(MvelConstraint.java:179) at org.drools.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:157) at org.drools.rule.constraint.MvelConstraint.isAllowedCachedLeft(MvelConstraint.java:136) at org.drools.common.SingleNonIndexSkipBetaConstraints.isAllowedCachedLeft(SingleNonIndexSkipBetaConstraints.java:125) at org.drools.reteoo.JoinNode.assertLeftTuple(JoinNode.java:96) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:232) at org.drools.reteoo.CompositeLeftTupleSinkAdapter.propagateAssertLeftTuple(CompositeLeftTupleSinkAdapter.java:89) at org.drools.reteoo.JoinNode.assertLeftTuple(JoinNode.java:98) at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:196) at org.drools.reteoo.SingleLeftTupleSinkAdapter.createAndPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:145) at org.drools.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:154) at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59) at org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:364) at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:235) at org.drools.reteoo.EntryPointNode.assertQuery(EntryPointNode.java:146) at org.drools.reteoo.ReteooWorkingMemory.getQueryResults(ReteooWorkingMemory.java:189) -- View this message in context: http://drools.46999.n3.nabble.com/Drools-hangs-on-parsing-a-Query-tp40211... Sent from the Drools: User forum mailing list archive at Nabble.com.