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

[mohdejaz74]

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



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