David Li created ARROW-15107:
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Summary: [C++][FlightRPC] Enable Shutdown() to cancel ongoing RPCs
Key: ARROW-15107
URL: https://issues.apache.org/jira/browse/ARROW-15107
Project: Apache Arrow
Issue Type: Improvement
Components: C++, FlightRPC
Reporter: David Li
gRPC will not signal {{is_cancelled}} to ongoing RPCs after Shutdown(), even if
a deadline is provided. The net effect is that C++/Python servers appear
unresponsive to SIGINT. We can implement this manually by setting a flag in
Shutdown() that gets read in the ServerCallContext so that RPC handlers know
they should cancel. (We may also want to have ServerCallContext call TryCancel
in this case so that the client is properly notified.)
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