[rules-users] Change Notification doesn't work with eval(true) in one of the rules

All the rules defined in a single DRL were running fine until one day we added eval(manager.isEnabledSomeSettings()) into one of the rule in drl, which causing an issue for change update on the fly (see below error stacks). When we changed that eval to Boolean(this == Boolean.TRUE) from manager.isEnabledSomeSettings() then the change notification getting back to work properly. Any ideas? KnowledgeAgent adding KnowledgeDefinitionsPackage com.baml.investxa.rule.order Exception in thread "Thread-15" java.util.NoSuchElementException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:796) at java.util.HashMap$EntryIterator.next(HashMap.java:834) at java.util.HashMap$EntryIterator.next(HashMap.java:832) at org.drools.reteoo.EvalConditionNode.doRemove(EvalConditionNode.java:311) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.BetaNode.doRemove(BetaNode.java:372) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.FromNode.doRemove(FromNode.java:390) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.FromNode.doRemove(FromNode.java:390) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.RightInputAdapterNode.doRemove(RightInputAdapterNode.java:254) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.BetaNode.doRemove(BetaNode.java:368) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.FromNode.doRemove(FromNode.java:390) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.RuleTerminalNode.doRemove(RuleTerminalNode.java:429) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.ReteooBuilder.removeRule(ReteooBuilder.java:232) at org.drools.reteoo.ReteooRuleBase.removeRule(ReteooRuleBase.java:414) at org.drools.common.AbstractRuleBase.removeRule(AbstractRuleBase.java:836) at org.drools.common.AbstractRuleBase.mergePackage(AbstractRuleBase.java:628) at org.drools.common.AbstractRuleBase.addPackages(AbstractRuleBase.java:541) at org.drools.reteoo.ReteooRuleBase.addPackages(ReteooRuleBase.java:427) at org.drools.reteoo.ReteooRuleBase.addPackage(ReteooRuleBase.java:434) at org.drools.agent.impl.KnowledgeAgentImpl.addResourcesToKnowledgeBase(KnowledgeAgentImpl.java:1031) at org.drools.agent.impl.KnowledgeAgentImpl.incrementalBuildResources(KnowledgeAgentImpl.java:909) at org.drools.agent.impl.KnowledgeAgentImpl.buildKnowledgeBase(KnowledgeAgentImpl.java:648) at org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:192) at org.drools.agent.impl.KnowledgeAgentImpl$ChangeSetNotificationDetector.run(KnowledgeAgentImpl.java:1202) at java.lang.Thread.run(Thread.java:662) Exception in thread "Thread-22" java.util.NoSuchElementException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:796) at java.util.HashMap$EntryIterator.next(HashMap.java:834) at java.util.HashMap$EntryIterator.next(HashMap.java:832) at org.drools.reteoo.EvalConditionNode.doRemove(EvalConditionNode.java:311) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.BetaNode.doRemove(BetaNode.java:372) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.FromNode.doRemove(FromNode.java:390) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.FromNode.doRemove(FromNode.java:390) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.RightInputAdapterNode.doRemove(RightInputAdapterNode.java:254) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.BetaNode.doRemove(BetaNode.java:368) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.FromNode.doRemove(FromNode.java:390) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.RuleTerminalNode.doRemove(RuleTerminalNode.java:429) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.ReteooBuilder.removeRule(ReteooBuilder.java:232) at org.drools.reteoo.ReteooRuleBase.removeRule(ReteooRuleBase.java:414) at org.drools.common.AbstractRuleBase.removeRule(AbstractRuleBase.java:836) at org.drools.common.AbstractRuleBase.mergePackage(AbstractRuleBase.java:628) at org.drools.common.AbstractRuleBase.addPackages(AbstractRuleBase.java:541) at org.drools.reteoo.ReteooRuleBase.addPackages(ReteooRuleBase.java:427) at org.drools.reteoo.ReteooRuleBase.addPackage(ReteooRuleBase.java:434) at org.drools.agent.impl.KnowledgeAgentImpl.addResourcesToKnowledgeBase(KnowledgeAgentImpl.java:1031) at org.drools.agent.impl.KnowledgeAgentImpl.incrementalBuildResources(KnowledgeAgentImpl.java:909) at org.drools.agent.impl.KnowledgeAgentImpl.buildKnowledgeBase(KnowledgeAgentImpl.java:648) at org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:192) at org.drools.agent.impl.KnowledgeAgentImpl$ChangeSetNotificationDetector.run(KnowledgeAgentImpl.java:1202) at java.lang.Thread.run(Thread.java:662) Exception in thread "Thread-21" java.util.NoSuchElementException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:796) at java.util.HashMap$EntryIterator.next(HashMap.java:834) at java.util.HashMap$EntryIterator.next(HashMap.java:832) at org.drools.reteoo.EvalConditionNode.doRemove(EvalConditionNode.java:311) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.BetaNode.doRemove(BetaNode.java:372) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.FromNode.doRemove(FromNode.java:390) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.FromNode.doRemove(FromNode.java:390) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.RightInputAdapterNode.doRemove(RightInputAdapterNode.java:254) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.BetaNode.doRemove(BetaNode.java:368) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.FromNode.doRemove(FromNode.java:390) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.RuleTerminalNode.doRemove(RuleTerminalNode.java:429) at org.drools.common.BaseNode.remove(BaseNode.java:105) at org.drools.reteoo.ReteooBuilder.removeRule(ReteooBuilder.java:232) at org.drools.reteoo.ReteooRuleBase.removeRule(ReteooRuleBase.java:414) at org.drools.common.AbstractRuleBase.removeRule(AbstractRuleBase.java:836) at org.drools.common.AbstractRuleBase.mergePackage(AbstractRuleBase.java:628) at org.drools.common.AbstractRuleBase.addPackages(AbstractRuleBase.java:541) at org.drools.reteoo.ReteooRuleBase.addPackages(ReteooRuleBase.java:427) at org.drools.reteoo.ReteooRuleBase.addPackage(ReteooRuleBase.java:434) at org.drools.agent.impl.KnowledgeAgentImpl.addResourcesToKnowledgeBase(KnowledgeAgentImpl.java:1031) at org.drools.agent.impl.KnowledgeAgentImpl.incrementalBuildResources(KnowledgeAgentImpl.java:909) at org.drools.agent.impl.KnowledgeAgentImpl.buildKnowledgeBase(KnowledgeAgentImpl.java:648) at org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:192) at org.drools.agent.impl.KnowledgeAgentImpl$ChangeSetNotificationDetector.run(KnowledgeAgentImpl.java:1202) at java.lang.Thread.run(Thread.java:662) -- View this message in context: http://drools.46999.n3.nabble.com/Change-Notification-doesn-t-work-with-e... 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