Thanks Adam, Burn, for your detailed explanation. In my case, I've got only one cas consumer that is to serialize each CAS to an individual file. Not resource contention among different CASs at the consumer end. So I guess I should have the CAS consumer bundled with the AE pipeline, right? Can a CPE be configured without any CAS consumer?
In the diagram mentioned in Adam's email, are the input/output queue size the same as the CAS Pool Size? Or 1/2 of the pool size? Thanks! Nick -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Adam Lally Sent: Thursday, April 16, 2009 10:25 PM To: [email protected] Subject: Re: Running CPE with multi-threading On Thu, Apr 16, 2009 at 6:39 PM, Burn Lewis <[email protected]> wrote: > My understanding is that there is a separate CasConsumer thread and only the > portion of the pipeline before the first CasConsumer runs in the pipeline > thread(s). The first CasConsumer and all following CasProcessors run in > this extra thread. This avoids any multi-threading issues when the > CasConsumer updates external resources. You can of course implement your > consumers as regular AEs and manage the synchonization yourself. > That's correct - there's a diagram of how that works in this section of the documentation: http://incubator.apache.org/uima/downloads/releaseDocs/2.2.2-incubating/docs/html/references/references.html#ugr.ref.xml.cpe_descriptor.overview -Adam This communication, along with any attachments, is covered by federal and state law governing electronic communications and may contain company proprietary and legally privileged information. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution, use or copying of this message is strictly prohibited. If you have received this in error, please reply immediately to the sender and delete this message. Thank you.
