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From Erik Fäßler <erik.faess...@uni-jena.de>
Subject Re: Batch Checkpoints with DUCC?
Date Wed, 16 May 2018 06:56:02 GMT
Hey Eddie, thanks again! :-)

So the idea is that the work item is the CAS that the CR sent to the CM, right? The work item
CAS consists of a list of artifacts which are output by the CM, processed by the pipeline
and finally cached by the CC.
Then, I can somehow (have to read this up) have the work item CAS sent to the CC as the effective
“batch processing complete” signal.

Is that correct?

> On 15. May 2018, at 20:50, Eddie Epstein <eaepstein@gmail.com> wrote:
> Hi Erik,
> There is a brief discussion of this in the duccbook in section 9.3 ...
> https://uima.apache.org/d/uima-ducc-2.2.2/duccbook.html#x1-1880009.3
> In particular, the 3rd option, "Flushing cached data". This assumes that
> the batch of work to be flushed is represented by each workitem CAS.
> Regards,
> Eddie
> On Tue, May 15, 2018 at 9:21 AM, Erik Fäßler <erik.faessler@uni-jena.de>
> wrote:
>> And another question concerning DUCC :-)
>> With my CPEs I use a lot the batchProcessingComplete() and
>> collectionProcessingComplete() methods. I need them because I do a lot of
>> database interactions where I need to send data in batches due to the
>> overhead of network communication.
>> How is that handled in DUCC? The documentation does not talk about it, at
>> least it not find anything.
>> Hints are appreciated.
>> Thanks!
>> Erik

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