[ARROW-15594] [C++][FlightRPC] Allow parsing messages from const Buffer&

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 8.0.0
• Component/s: C++, FlightRPC
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/31057
• Assignee: David Li
• Reporter: David Li
• Created: 05/Feb/22 18:08
• Updated: 11/Jan/23 11:38
• Resolved: 15/Feb/22 17:38

Description

Right now methods like FlightInfo::Deserialize require const std::string& which requires an allocation if we're starting with a Buffer. While not a big deal, it would be nice if we could avoid the hit. (This comes up in Flight/UCX since the implementation is done in terms of Buffers.)

Issue Links

• links to: GitHub Pull Request #12345