[ARROW-16127] [C++][FlightRPC] Improve concurrent call implementation in UCX client

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: C++, FlightRPC
• External issue URL: https://github.com/apache/arrow/issues/31536
• Assignee: Unassigned
• Reporter: David Li
• Created: 05/Apr/22 14:57
• Updated: 11/Jan/23 11:42

Description

This currently relies on a pool of workers and endpoints; ideally we would be able to share a worker or even better multiplex multiple calls over a single endpoint (this would require wire protocol changes, however!). Care should be taken not to hurt performance if we do enable a multithreaded worker (which would be necessary, unless we switch to a model where all threads send work to a single worker thread).

Issue Links

• is related to: ARROW-15706 [C++][FlightRPC] Implement a UCX transport