[rules-dev] Exception in runtime

[Tom.E.Murphy at wellsfargo.com]

Anybody have any ideas on this?

We are seeing ConcurrentModificationException while inserting objects into working memory. This happens occasionally, either at service start-up, where the first transaction is being submitted and the rules are loading for the first time, or sometimes under heavy loads with lots of transactions being processed by the service:
Drools 5.0.1-GA
AS: Web Logic
JVM: 1.5


Fragment of stack trace:
Caused by: java.util.ConcurrentModificationException
java.util.HashMap$HashIterator.nextEntry(HashMap.java:2117)
java.util.HashMap$ValueIterator.next(HashMap.java:2147)
org.drools.reteoo.EntryPointNode.updateSink(EntryPointNode.java:285)
org.drools.reteoo.ObjectTypeNode.attach(ObjectTypeNode.java:279)
org.drools.reteoo.builder.PatternBuilder.attachObjectTypeNode(PatternBuilder.java:234)
org.drools.reteoo.ClassObjectTypeConf.<init>(ClassObjectTypeConf.java:93)
org.drools.common.ObjectTypeConfigurationRegistry.getObjectTypeConf(ObjectTypeConfigurationRegistry.java:58)
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:849)
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:788)
org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:216)
com.wellsfargo.ARGenT.Execution.DefaultLoader.Load(DefaultLoader.java:16)



Tom Murphy

Business Process Consultant
Wells Fargo HCFG - CORE Deal Decisioning Platform

800 S. Jordan Creek Parkway | West Des Moines, IA 50266
MAC: X2301-01B
Office: 515 324 4853 | Mobile: 515 423 4334

tom.e.murphy at wellsfargo.com

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