[jboss-jira] [JBoss JIRA] Created: (JBRULES-2443) org.drools.runtime.rule.ConsequenceException caused by java.util.ConcurrentModificationException

[Jian Zhi (JIRA)]

org.drools.runtime.rule.ConsequenceException caused by java.util.ConcurrentModificationException
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                 Key: JBRULES-2443
                 URL: https://jira.jboss.org/jira/browse/JBRULES-2443
             Project: Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: drools-core
    Affects Versions: 5.0.1.FINAL
            Reporter: Jian Zhi
            Assignee: Mark Proctor


We got the rule consequence exception which is caused by ConcurrentModificationException. This happened when we import the payments for the consumers in the batch, and one of the consumer failed.  The rule is defined in the decision table in Guvnor. The source for the rule is attached. It's just a simple eligibility check. 

Please investigate the issue. Thanks.

org.drools.runtime.rule.ConsequenceException: [Error: drools.insert(fact0 ): null]
[Near : {... Unknown ....}]
             ^
[Line: 1, Column: 0]
	at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:23)
	at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:943)
	at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:885)
	at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1086)
	at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:660)

--------------------------------------------------------------------------------------------------------------------------------------------------------------------

[Line: 1, Column: 0]
	at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:374)
	at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:138)
	at org.mvel2.optimizers.dynamic.DynamicOptimizer.optimizeAccessor(DynamicOptimizer.java:62)
	at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:133)
	at org.mvel2.MVELRuntime.execute(MVELRuntime.java:85)
	at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:104)
	at org.mvel2.MVEL.executeExpression(MVEL.java:978)
	at org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:87)
	at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:934)
	... 52 more
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:931)
	at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:316)
	... 60 more
Caused by: java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
	at java.util.HashMap$ValueIterator.next(HashMap.java:822)
	at org.drools.reteoo.EntryPointNode.updateSink(EntryPointNode.java:285)
	at org.drools.reteoo.ObjectTypeNode.attach(ObjectTypeNode.java:279)
	at org.drools.reteoo.builder.PatternBuilder.attachObjectTypeNode(PatternBuilder.java:234)
	at org.drools.reteoo.ClassObjectTypeConf.<init>(ClassObjectTypeConf.java:93)
	at org.drools.common.ObjectTypeConfigurationRegistry.getObjectTypeConf(ObjectTypeConfigurationRegistry.java:58)
	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:849)
	at org.drools.base.DefaultKnowledgeHelper.insert(DefaultKnowledgeHelper.java:114)
	at org.drools.base.DefaultKnowledgeHelper.insert(DefaultKnowledgeHelper.java:108)



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