Problem with cancelation of fetch operation
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Key: CORE-5152
URL: http://tracker.firebirdsql.org/browse/CORE-5152
Project: Firebird Core
Issue Type: Bug
Components: Engine
Affects Versions: 2.5.6
Reporter: Kovalenko Dmitry
Cancelation of operation works when "op_cancel" processed in
"SRVR_multi_thread" function
And does not work, when "op_cancel" processed in "loopThread" function.
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I played with stored procedure from CORE-3982
1. Execute "select ID,DUMMY from SP_PAUSE_FETCH(1000,10000000)"
2. Try to cancel after receive a first BLOCK of records.
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>From my point of view, the problem in structure of data packets. It does not
>allow a separate (parallel) loading (in SRVR_multi_thread) and executing (in
>loopThread) of operations.
Each packet should contain a own size.
It will allow with minimal efforts detect the "op_cancel" operation in stream
of data packets at "SRVR_multi_thread" level.
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