[jboss-jira] [JBoss JIRA] (DROOLS-634) Exception thrown from WorkingMemoryLogger randomly when simultaneous evaluation taking place by different threads

[Anantjot Anand (JIRA)]

    [ https://issues.jboss.org/browse/DROOLS-634?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13014423#comment-13014423 ] 

Anantjot Anand commented on DROOLS-634:
---------------------------------------

Mario- I don't have reproducer as separate program. We have seen this intermittently when running with in the web service and client is sending requests simultaneously. I will work to isolate this in separate reproducer. Meanwhile if it is possible to review anything that could be mult-thread unsafe and cause this behavior would be helpful.

> Exception thrown from WorkingMemoryLogger randomly when simultaneous evaluation taking place by different threads
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: DROOLS-634
>                 URL: https://issues.jboss.org/browse/DROOLS-634
>             Project: Drools
>          Issue Type: Bug
>    Affects Versions: 6.2.0.CR1
>            Reporter: Anantjot Anand
>            Assignee: Mario Fusco
>
> Caused by: java.lang.NullPointerException
> 	at org.drools.core.reteoo.RuleTerminalNodeLeftTuple.getDeclarationIds(RuleTerminalNodeLeftTuple.java:394)
> 	at org.drools.core.audit.WorkingMemoryLogger.extractDeclarations(WorkingMemoryLogger.java:325)
> 	at org.drools.core.audit.WorkingMemoryLogger.matchCreated(WorkingMemoryLogger.java:269)
> 	at org.drools.core.event.AgendaEventSupport.fireActivationCreated(AgendaEventSupport.java:58)
> 	at org.drools.core.phreak.PhreakRuleTerminalNode.doLeftTupleInsert(PhreakRuleTerminalNode.java:95)
> 	at org.drools.core.phreak.PhreakRuleTerminalNode.doLeftInserts(PhreakRuleTerminalNode.java:69)
> 	at org.drools.core.phreak.PhreakRuleTerminalNode.doNode(PhreakRuleTerminalNode.java:42)
> 	at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:316)
> 	at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:161)
> 	at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:116)
> 	at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:225)
> 	at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:98)
> 	at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:988)
> 	at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1274)
> 	at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1281)
> 	at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1254)



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