Akshaya Annavajhala (AK) created ARROW-17920:
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Summary: Built-in GRPC health checks in FlightServerBase
Key: ARROW-17920
URL: https://issues.apache.org/jira/browse/ARROW-17920
Project: Apache Arrow
Issue Type: Improvement
Components: FlightRPC
Affects Versions: 9.0.0
Reporter: Akshaya Annavajhala (AK)
[ARROW-14440] [C++][FlightRPC] Add example of registering gRPC service on a
Flight server - ASF JIRA (apache.org)
Related to the above issue, a portion of the issue notes that currently it is
impossible in python for a server implementing FSB to extend to other gRPC
messages. While I haven't verified that claim, it seems to be valid.
Complete composability in python of an arbitrary gRPC service + FlightServer
might not be a goal, but rather one possible way to implement a useful
production flightserver that responds appropriately to [k8s-style health
probes|[https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/#define-a-liveness-command].]
A concrete ask perhaps more idiomatic to FSB is overridable default
implementations of [gRPC health check
messages|[https://github.com/grpc/grpc/blob/master/doc/health-checking.md#grpc-health-checking-protocol],]
which would allow "simple" python derivations of FlightServerBase to be served
in production environments (including k8s above which is adding support for the
generic gRPC health checking protocol).
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