Re: [rules-users] threw error java.lang.ClassCastException: org.drools.reteoo.FromNode$FromMemory cannot be cast to org.drools.reteoo.BetaMemory

There was indeed a leak in locking. I have three operations - add, del, exec rules. add and delete were atomic but exec was not. Before getting reference to KB in exec rules, I made sure add/del were not accessing KB ... but I need lock KB even when rules are executing and release the lock when rules have executed (although I get a stateful session from KB before executing rules) I suspect this error occurs when rules are executing and at the same time add/delete rule is invoked. I've not seen any further errors ... but we are still testing it. Ejaz -- View this message in context: http://drools.46999.n3.nabble.com/threw-error-java-lang-ClassCastExceptio... Sent from the Drools: User forum mailing list archive at Nabble.com.