Details
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Type:
Bug
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Status: Closed (View Workflow)
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: Meridian-2018.1.8
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Fix Version/s: 26.0.0
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Component/s: Correlator, Events
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Security Level: Default (Default Security Scheme)
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Labels:None
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Environment:RHEL 6.10 x86_64
Oracle JDK 1.8.0_191
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Sprint:Horizon 2020 - January 8th
Description
A Drools rule caught a ConcurrentModificationException while marshaling an event using JaxbUtils.marshal(Event event).
No other Drools engines are subscribed to this UEI, and its logmsg.dest is donotpersist, so nothing else should be modifying the event.
Note that the Event.toString() method in the catch statement did not throw an exception.
The rule in question:
rule "CloneNewEvents" salience 999999 lock-on-active when $event : Event($uei : uei) then String logTag = "nodeProvisioning:cloneEvent ::"; LOG.debug("{} Deleting and cloning event with uei {}", logTag, $uei); delete($event); try { String strEvent = JaxbUtils.marshal($event); Event clonedEvent = JaxbUtils.unmarshal(Event.class, Sanitation.stripNonValidXMLCharactersByRegex(strEvent)); insert(clonedEvent); } catch (Exception ex) { LOG.error("{} Exception caught while cloning event {}:\n", logTag, $event.toString(), ex); } end
The exception, with the event's details redacted:
2019-05-29 05:16:47,723 ERROR [DroolsCorrelationEngine-Notify-Thread] D.Engine: nodeProvisioning:cloneEvent :: Exception caught while cloning event [[ JSONified event ]]: org.opennms.core.xml.MarshallingResourceFailureException: Failed to marshal/unmarshal XML file while marshalling Event: javax.xml.bind.MarshalException - with linked exception: [java.util.ConcurrentModificationException]; nested exception is javax.xml.bind.MarshalException - with linked exception: [java.util.ConcurrentModificationException] at org.opennms.core.xml.MarshallingExceptionTranslator.translate(MarshallingExceptionTranslator.java:61) ~[org.opennms.core.xml-2018.1.8.jar:?] at org.opennms.core.xml.JaxbUtils.marshal(JaxbUtils.java:182) ~[org.opennms.core.xml-2018.1.8.jar:?] at org.opennms.core.xml.JaxbUtils.marshal(JaxbUtils.java:117) ~[org.opennms.core.xml-2018.1.8.jar:?] at org.opennms.netmgt.correlation.drools.Rule_CloneNewEvents777744953.defaultConsequence(Rule_CloneNewEvents777744953.java:11) [drools-core-7.7.0.Final.jar:?] at org.opennms.netmgt.correlation.drools.Rule_CloneNewEvents777744953DefaultConsequenceInvokerGenerated.evaluate(Unknown Source) [?:?] at org.opennms.netmgt.correlation.drools.Rule_CloneNewEvents777744953DefaultConsequenceInvoker.evaluate(Unknown Source) [drools-core-7.7.0.Final.jar:?] at org.drools.core.phreak.RuleExecutor.innerFireActivation(RuleExecutor.java:431) [drools-core-7.7.0.Final.jar:7.7.0.Final] at org.drools.core.phreak.RuleExecutor.fireActivation(RuleExecutor.java:379) [drools-core-7.7.0.Final.jar:7.7.0.Final] at org.drools.core.phreak.RuleExecutor.fire(RuleExecutor.java:135) [drools-core-7.7.0.Final.jar:7.7.0.Final] at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:88) [drools-core-7.7.0.Final.jar:7.7.0.Final] at org.drools.core.concurrent.AbstractRuleEvaluator.internalEvaluateAndFire(AbstractRuleEvaluator.java:34) [drools-core-7.7.0.Final.jar:7.7.0.Final] at org.drools.core.concurrent.SequentialRuleEvaluator.evaluateAndFire(SequentialRuleEvaluator.java:43) [drools-core-7.7.0.Final.jar:7.7.0.Final] at org.drools.core.common.DefaultAgenda.fireLoop(DefaultAgenda.java:1067) [drools-core-7.7.0.Final.jar:7.7.0.Final] at org.drools.core.common.DefaultAgenda.internalFireAllRules(DefaultAgenda.java:1014) [drools-core-7.7.0.Final.jar:7.7.0.Final] at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1006) [drools-core-7.7.0.Final.jar:7.7.0.Final] at org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1308) [drools-core-7.7.0.Final.jar:7.7.0.Final] at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1299) [drools-core-7.7.0.Final.jar:7.7.0.Final] at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1283) [drools-core-7.7.0.Final.jar:7.7.0.Final] at org.opennms.netmgt.correlation.drools.DroolsCorrelationEngine.correlate(DroolsCorrelationEngine.java:136) [drools-correlation-engine-2018.1.8.jar:?] at org.opennms.netmgt.correlation.Correlator$EngineAdapter.onEvent(Correlator.java:91) [opennms-correlator-2018.1.8.jar:?] at org.opennms.netmgt.eventd.EventIpcManagerDefaultImpl$EventListenerExecutor$2.run(EventIpcManagerDefaultImpl.java:189) [org.opennms.features.events.daemon-2018.1.8.jar:?] at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1626) [?:1.8.0_191] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_191] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_191] at org.opennms.core.concurrent.LogPreservingThreadFactory$2.run(LogPreservingThreadFactory.java:106) [opennms-util-2018.1.8.jar:?] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191] Caused by: javax.xml.bind.MarshalException at org.eclipse.persistence.jaxb.JAXBMarshaller.marshal(JAXBMarshaller.java:686) ~[org.eclipse.persistence.moxy-2.5.1.jar:?] at org.opennms.core.xml.JaxbUtils.marshal(JaxbUtils.java:180) ~[org.opennms.core.xml-2018.1.8.jar:?] ... 24 more Caused by: java.util.ConcurrentModificationException at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:909) ~[?:1.8.0_191] at java.util.ArrayList$Itr.next(ArrayList.java:859) ~[?:1.8.0_191] at org.eclipse.persistence.internal.queries.InterfaceContainerPolicy.next(InterfaceContainerPolicy.java:274) ~[org.eclipse.persistence.core-2.5.1.jar:?] at org.eclipse.persistence.internal.queries.ContainerPolicy.next(ContainerPolicy.java:1166) ~[org.eclipse.persistence.core-2.5.1.jar:?] at org.eclipse.persistence.internal.queries.ContainerPolicy.next(ContainerPolicy.java:1) ~[org.eclipse.persistence.core-2.5.1.jar:?] at org.eclipse.persistence.internal.oxm.XMLCompositeCollectionMappingNodeValue.marshal(XMLCompositeCollectionMappingNodeValue.java:107) ~[org.eclipse.persistence.core-2.5.1.jar:?] at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:149) ~[org.eclipse.persistence.core-2.5.1.jar:?] at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:102) ~[org.eclipse.persistence.core-2.5.1.jar:?] at org.eclipse.persistence.internal.oxm.record.ObjectMarshalContext.marshal(ObjectMarshalContext.java:59) ~[org.eclipse.persistence.core-2.5.1.jar:?] at org.eclipse.persistence.internal.oxm.XPathNode.marshal(XPathNode.java:401) ~[org.eclipse.persistence.core-2.5.1.jar:?] at org.eclipse.persistence.internal.oxm.XPathNode.marshal(XPathNode.java:382) ~[org.eclipse.persistence.core-2.5.1.jar:?] at org.eclipse.persistence.internal.oxm.XPathObjectBuilder.buildRow(XPathObjectBuilder.java:240) ~[org.eclipse.persistence.core-2.5.1.jar:?] at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:118) ~[org.eclipse.persistence.core-2.5.1.jar:?] at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:1) ~[org.eclipse.persistence.core-2.5.1.jar:?] at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:751) ~[org.eclipse.persistence.core-2.5.1.jar:?] at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshalStreamOrWriter(XMLMarshaller.java:1128) ~[org.eclipse.persistence.core-2.5.1.jar:?] at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:1079) ~[org.eclipse.persistence.core-2.5.1.jar:?] at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:1034) ~[org.eclipse.persistence.core-2.5.1.jar:?] at org.eclipse.persistence.jaxb.JAXBMarshaller.marshal(JAXBMarshaller.java:684) ~[org.eclipse.persistence.moxy-2.5.1.jar:?] at org.opennms.core.xml.JaxbUtils.marshal(JaxbUtils.java:180) ~[org.opennms.core.xml-2018.1.8.jar:?] ... 24 more