[jboss-jira] [JBoss JIRA] (DROOLS-3413) CME in DefaultAgenda.evaluateEagerList
Will Keaney created DROOLS-3413:
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Summary: CME in DefaultAgenda.evaluateEagerList
Key: DROOLS-3413
URL: https://issues.jboss.org/browse/DROOLS-3413
Project: Drools
Issue Type: Bug
Components: core engine
Affects Versions: 6.5.0.Final
Environment: RHEL 6.10 x86_64
Drools embedded in OpenNMS Meridian 2017.1.5.
Reporter: Will Keaney
Assignee: Mario Fusco
I have a KieSession that runs in Stream processing mode, which is throwing frequent
ConcurrentModificationExceptions in evaluateEagerList:
{code}Exception in thread "FireTask" java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
at java.util.ArrayList$Itr.next(ArrayList.java:851)
at org.drools.core.phreak.PhreakFromNode.doLeftUpdates(PhreakFromNode.java:176)
at org.drools.core.phreak.PhreakFromNode.doNode(PhreakFromNode.java:64)
at
org.drools.core.phreak.RuleNetworkEvaluator.evalNode(RuleNetworkEvaluator.java:355)
at
org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:301)
at
org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:136)
at
org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:94)
at org.drools.core.phreak.RuleExecutor.evaluateNetwork(RuleExecutor.java:65)
at org.drools.core.common.DefaultAgenda.evaluateEagerList(DefaultAgenda.java:983)
at org.drools.core.phreak.RuleExecutor.haltRuleFiring(RuleExecutor.java:233)
at org.drools.core.phreak.RuleExecutor.fire(RuleExecutor.java:138)
at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:74)
at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:970)
at org.drools.core.common.DefaultAgenda.fireLoop(DefaultAgenda.java:1312)
at org.drools.core.common.DefaultAgenda.fireUntilHalt(DefaultAgenda.java:1232)
at
org.drools.core.impl.StatefulKnowledgeSessionImpl.fireUntilHalt(StatefulKnowledgeSessionImpl.java:1398)
at
org.drools.core.impl.StatefulKnowledgeSessionImpl.fireUntilHalt(StatefulKnowledgeSessionImpl.java:1377)
at
org.opennms.netmgt.correlation.drools.DroolsCorrelationEngine.lambda$initialize$2(DroolsCorrelationEngine.java:217)
at java.lang.Thread.run(Thread.java:745){code}
Many of the rules in this KB have {{no-loop true}}.
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