[rules-users] Drools Classloader Leak?

[malkhafaji]

Hello,

I noticed (using JConsole) that my application keeps loading more and more
classes. I have over 105K classes loaded! I did a lot of debugging and
isolation until I found the line that brings the number of classes loaded
from 20K to 105K. It is this line:

this.knowledgeBase.addKnowledgePackages(packages);

packages is an array list of 8 DRLs that are compiled successfully. I am
calling the line above exactly 99 times. However, I do have 99 instances of
this.knowledgeBase. So, I have a total of 99 instances of "knowledgeBase",
and each instance is called once (line above) with 8 successfully compiled
DRLs. 

I am starting to think that each instance of a KnowledgeBase somehow uses
its own Classloader? Do I need to manually get the current application
Classloader and pass it on to each instance of KnowledgeBase to ensure that
no classes are loaded more than once? Is this a leak in the Classloader that
comes inside the KnowledgeBase.addKnowledgePackage method? I did post
somewhere else about delays on the line above, and no wonder it sometimes
takes a couple of seconds to execute that line (the largest rules file I
have is 150 KB with no more than 100 rules) if it creates a new Classloader
and loads the same loaded classes AGAIN. Any insights on this?

P.S. I did a search on the forum and couldn't find anything related to this.
If you have better searching skills and found a post in that regards, please
kindly point me to it. This is a very important issue as we are going to a
live production environment in 3 weeks and I am not too happy with the
performance, specifically around the line above. 

Thank you, and have a great weekend.
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