org.drools.runtime.rule.ConsequenceException caused by java.util.ConcurrentModificationException ------------------------------------------------------------------------------------------------ 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) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira