[jboss-jira] [JBoss JIRA] (DROOLS-211) Race condition causing jitting error

[Mario Fusco (JIRA)]

     [ https://issues.jboss.org/browse/DROOLS-211?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mario Fusco reassigned DROOLS-211:
----------------------------------

    Assignee: Mario Fusco  (was: Mark Proctor)

    
> Race condition causing jitting error
> ------------------------------------
>
>                 Key: DROOLS-211
>                 URL: https://issues.jboss.org/browse/DROOLS-211
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 5.5.1.Final
>            Reporter: Ming Fang
>            Assignee: Mario Fusco
>         Attachments: JittingTest.java, test.drl
>
>
> When there is a rule that retracts a fact while a MvelConstraint.ConditionJitter task runs, then sometimes the jitting task fails with this error...
> java.lang.NullPointerException
> 	at org.drools.base.defaultpkg.Person13506221$getField10.getValue(Unknown Source)
> 	at org.drools.base.ClassFieldReader.getValue(ClassFieldReader.java:87)
> 	at org.drools.rule.Declaration.getValue(Declaration.java:233)
> 	at org.drools.base.mvel.MVELCompilationUnit.updateFactory(MVELCompilationUnit.java:344)
> 	at org.drools.base.mvel.MVELCompilationUnit.updateFactory(MVELCompilationUnit.java:289)
> 	at org.drools.rule.constraint.MvelConditionEvaluator.evaluate(MvelConditionEvaluator.java:62)
> 	at org.drools.rule.constraint.MvelConditionEvaluator.ensureBranchEvaluation(MvelConditionEvaluator.java:120)
> 	at org.drools.rule.constraint.MvelConditionEvaluator.ensureCompleteEvaluation(MvelConditionEvaluator.java:105)
> 	at org.drools.rule.constraint.MvelConditionEvaluator.ensureCompleteEvaluation(MvelConditionEvaluator.java:93)
> 	at org.drools.rule.constraint.MvelConditionEvaluator.getAnalyzedCondition(MvelConditionEvaluator.java:85)
> 	at org.drools.rule.constraint.MvelConstraint.executeJitting(MvelConstraint.java:284)
> 	at org.drools.rule.constraint.MvelConstraint.access$200(MvelConstraint.java:54)
> 	at org.drools.rule.constraint.MvelConstraint$ConditionJitter.run(MvelConstraint.java:263)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> 	at java.lang.Thread.run(Thread.java:662)
>  

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