[rules-users] Drools hangs on parsing a Query
*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)
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