[ARROW-11724] [C++] Namespace collisions with protobuf 3.15

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 4.0.0
• Component/s: C++, FlightRPC
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/27582
• Assignee: Uwe Korn
• Reporter: Uwe Korn
• Created: 21/Feb/21 21:04
• Updated: 11/Jan/23 08:21
• Resolved: 23/Feb/21 09:46

Description

We define pb as a namespace alias in the flight sources. This conflicts with protobuf starting to introduce it as its global namespace alias.

Issue Links

• links to: GitHub Pull Request #9542