[rules-users] Concurrent stateful knowledge session

[ismaximum]

Hi
I have one question and one problem.
The question is, is multiple instances of stateful session, thread safe?

The problem is, we have a bunch of test cases. Each test class extends from
an abstract class in which drools session will be created. Previously we had
stateless session so therefore for each test method we had to create a new
session and call execute() method. 
Now because of the huge number of test methods this runs for about 20
minutes. So we decided to change the the session to stateful to make it
faster.

After this change, many of test cases have ended with assertion failure
which doesn't make sense. I don't know what's wrong here, before each test
method, we retract any previous fact and we insert new objects. 

Since jnuit runs tests in multiple threads I thought maybe there is an issue
with concurrency. 

Can anyone please help me on this.
Thanks



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