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From Ashutosh Sharma <ashu.sha...@hotmail.com>
Subject RE: Multi-threaded CAS Consumer
Date Tue, 02 Sep 2008 13:44:17 GMT

Thanks Burn

Regards,
Ashu


> Date: Tue, 2 Sep 2008 09:33:22 -0400
> From: burnlewis@gmail.com
> To: uima-user@incubator.apache.org
> Subject: Re: Multi-threaded CAS Consumer
> 
> Ashu,
> 
> Glad to hear it's working now.  I don't have much experience but I've found
> "Java Concurrency in Practice" by Brian Goetz very helpful and thorough.
> 
> Regards,  Burn.
> 
> On Tue, Sep 2, 2008 at 8:58 AM, Ashutosh Sharma <ashu.sharma@hotmail.com>wrote:
> 
> >
> > Thanks Burn,
> >
> > Yes, the default was true for multipleDeploymentAllowed. Thanks for your
> > response.
> > Now I am able to run CPE successfully. Thanks a lot.
> > Wait a minute, You have said that we can run multiple CAS Consumers but
> > need serialization to access the shared output.
> > Could you please tell me, how can I achieve this. Do you suggest some
> > reading for this issue.
> >
> > Thanks & Regards,
> > Ashu
> >
> >
> >
> > > Date: Tue, 2 Sep 2008 08:40:01 -0400
> > > From: burnlewis@gmail.com
> > > To: uima-user@incubator.apache.org
> > > Subject: Re: Multi-threaded CAS Consumer
> > >
> > > Does your CAS Consumer have the default of false for
> > > multipleDeploymentAllowed?  Usually only the annotator pipeline is run in
> > > multiple threads ... the CPE runs a single-threaded Collection Reader
> > that
> > > feeds the multiple replicated pipelines which all feed into a
> > > single-threaded CAS Consumer.  I think you can run multiple CAS Consumers
> > > but then you are resposible for serializing access to your shared output
> > > resources.
> > >
> > > Perhaps you could post the full trace of your exception.
> > >
> > > Burn.
> > >
> > > On Tue, Sep 2, 2008 at 12:11 AM, Ashutosh Sharma <
> > ashu.sharma@hotmail.com>wrote:
> > >
> > > >
> > > > Hi,
> > > >
> > > > I would like to run CPE in multithreaded environment. For this purpose,
> > I
> > > > changed the value of the variable named processingUnitThreadCount=3 in
> > CPE
> > > > Descriptor file. When I run the CPE, it gave me a Java null pointer
> > > > exception in my CAS Consumer. Where I initialize all basics open
> > connection
> > > > and initialize the command to insert the data.
> > > > Please help me to overcome this issue. How can I achieve the running
> > CPE in
> > > > multithreaded mode.
> > > >
> > > > Thanks & Regards,
> > > > Ashu
> > > >
> > > >
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