Each call to KieContainer.updateToVersion(ReleaseId version) creates a new classloader for unmodifed rules in the KieModule

I have attached a reproducer named UpdateToVersionCreatingNewClassloaders.java that creates a KieContainer with a KieModule that contains a single rule (rule name 1081) and then runs a loop that adds 1 rule and removes 1 rule and calls KieContainer.updateToVersion(). Along the way it creates .dmp files.

If you examine the .dmp files name updrule#_3.dmp (i.e. updrule1_3.dmp , updrule3_3.dmp ) you will see that the number of classloaders for the rule named org.drools.compiler.integrationTests.Rule_10810DefaultConsequenceInvoker increases by 1 each iteration.