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

[Ming Fang (JIRA)]

Ming Fang created DROOLS-211:
--------------------------------

             Summary: 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: Mark Proctor


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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