Re: [rules-users] Drools planner Score corruption issue: how to tackle?

Hi, I want to reinforce statement from Geoffrey by saying that from roughly 10 memory corruptions I have had so far, 8 were caused by bugs in MY identity/equality code!

If you write your own move implementations, here is one additional example of the bug I have had and that have caused me sleepless nights with sporadic memory corruption: public class MyMove implements Move { ... public void doMove(ScoreDirector scoreDirector) { scoreDirector.beforeVariableChanged(myPlanningVariableInstance, "myPlanningVariable"); myPlaningVariableInstance.setValue(toValue); scoreDirector.beforeVariableChanged(myPlanningVariableInstance, "myPlanningVariable"); //notice how I use beforeVariableChanged instead of afterVariableChanged... } }

br Reinis

On 01/10/2013 03:30 PM, Geoffrey De Smet wrote: > Op 10-01-13 10:54, Michiel Vermandel schreef: >> Hi, >> >> While running a planning I get after about 5 minutes a score corruption: >> >> Exception in thread "main" java.lang.IllegalStateException: Score >> corruption: the workingScore (-33hard/0soft) is not the >> uncorruptedScore (-23hard/0soft): >> The workingMemory has 1 ConstraintOccurrence(s) in excess: >> noConsecutiveIV/NEGATIVE_HARD:[Inspection of B747-AX145.I#1 >> -233344192, Inspection of B737-AC126.I#1 -24157252, Andy]=10 >> Check the score rules who created those ConstraintOccurrences. >> Verify that each ConstraintOccurrence's causes and weight is correct. >> >> This occurs in the localSearch phase (when only running the >> construction heuristic phase, I do not get this exception). >> >> How do I start in tackling this issue? > Start by looking at the "causes" vararg parameter you're giving to new > IntConstraintOccurrence, > including the equals/hashCode() of each of those elements. > Read up about insertLogical in the Drools Expert manual. > > PS: for 6.0 we're working on unmatchListeners which would allow us to > avoid the insertLogical and the "causes" parameter. >> Thanks a lot! >> >> Michiel >> ----------------- >> http://www.codessentials.com - Your essential software, for free! >> Follow us at http://twitter.com/#!/Codessentials >> >> >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users