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David LiGitHub
f941118ea6f
David Li authored and GitHub committed be30611871f
ARROW-14958: [C++][Python][FlightRPC] Implement Flight middleware for OpenTelemetry propagation (#11920)

Adds a client middleware that sends span/trace ID to the server, and a server middleware that gets the span/trace ID and starts a child span.

The middleware are available in builds without OpenTelemetry, they simply do nothing.

Authored-by: David Li <li.davidm96@gmail.com>
Signed-off-by: David Li <li.davidm96@gmail.com>