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Posted to jira@arrow.apache.org by "David Li (Jira)" <ji...@apache.org> on 2022/10/03 20:32:00 UTC

[jira] [Commented] (ARROW-17920) Built-in GRPC health checks in FlightServerBase

    [ https://issues.apache.org/jira/browse/ARROW-17920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17612429#comment-17612429 ] 

David Li commented on ARROW-17920:
----------------------------------

This is probably best proposed on the [mailing list|https://arrow.apache.org/community/]

> 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)
>            Priority: Minor
>
> [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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