Client of a CAS Multiplier should be able to stop processing of a CAS
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Key: UIMA-1391
URL: https://issues.apache.org/jira/browse/UIMA-1391
Project: UIMA
Issue Type: Improvement
Components: Async Scaleout
Reporter: Burn Lewis
Fix For: 2.3S
Normally the number of CASes generated by a Cas Multiplier is determined by the
CM itself, but with an aggregate CM that number may be hard to anticipate or
control. Some applications may not need all of the generated CASes ... they
may be satisfied once an appropriate amount of information has been returned.
Hence it would be convenient for the client to be able to request that the CM
stop generating CASes, and if an aggregate, stop processing any internal CASes
generated from the input CAS. Such a request is probably only useful for CMs
acting as pure segmenters ... if the CM is merging CASes or resegmenting them
then the process could be terminated by the application upon receiving an
end-of-stream CAS. It might be an acceptable simplification to have the stop
request stop all processing of active CASes, but then again it may be easily
handled by the changes being made to stop an aggregate CM when a generated CAS
produces an exception.
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