[rules-users] Can drools work in multithreaded environment?

[Edson Tirelli]

   If you are running 4.0.7 and using the proper MVEL dependecy lib, you
should not be facing any concurrency problem, assuming you are sharing the
rulebase but not the session.

   []s
   Edson

2008/9/4 toddp2 <tpatch at loftware.com>

>
>
> I ran into the same issue running JMeter recently.  I am getting the same
> stack trace.  I checked my version and I am using 4.0.7 of Drools.  Was
> this
> resolved by going to 4.0.7 for you?  Is there anything else to check?
>
> Todd
>
>
>
>
>
>
>   You must update to 4.0.7. You are probably facing the issues we had in
> 4.0.3.
>
>   []s
>   Edson
>
> 2008/5/7 Barath <barathguna at gmail.com>:
>
> >
> > Edson,
> > I am using  4.0.3 version.
> >
> > In my code,
> >  * For each thread new rule base and StatefulSession is created.
> >  * Then why i am getting the previously mentioned exceptions(which i
> > posted
> > in the first message) for few    threads only while other works fine.
> >  * Your suggestions please,
> >     " 1 . Am i getting this error bcoz of the global list? or any other
> > reason?
> >      2 . How to solve this problem?"
> >
> > ~Barath.
> >
> >
> > Edson Tirelli-3 wrote:
> > >
> > >    Barath,
> > >
> > >    What version of drools are you using?
> > >
> > >    The drools rulebase is designed to be shared among multiple threads.
> > > The
> > > working memory (session) is not.
> > >    Having said that, we had a couple bugs in the past regarding
> > > multi-thread
> > > environments, and so you must use 4.0.7 version that is about to be
> > > released. For you test, while you wait for the official release, you
> can
> > > checkout the code and built it from here:
> > >
> > > http://anonsvn.labs.jboss.com/labs/jbossrules/branches/4.0.x/
> > >
> > >    []s
> > >    Edson
> > >
> > > 2008/5/5 Barath <barathguna at gmail.com>:
>
> --
> View this message in context:
> http://www.nabble.com/Can-i-use-drools-in-multithreaded-environment--tp17053936p19310976.html
> Sent from the drools - user mailing list archive at Nabble.com.
>
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>



-- 
Edson Tirelli
JBoss Drools Core Development
JBoss, a division of Red Hat @ www.jboss.com
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