[ARROW-8323] [C++] Pin gRPC at v1.27 to avoid compilation error in its headers

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.16.0
• Fix Version/s: 0.17.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/24510
• Assignee: Ben Kietzman
• Reporter: Ben Kietzman
• Created: 02/Apr/20 18:58
• Updated: 11/Jan/23 07:59
• Resolved: 03/Apr/20 16:36

Description

gRPC 1.28 includes a change which introduces an implicit size_t->int conversion in proto_utils.h: https://github.com/grpc/grpc/commit/2748755a4ff9ed940356e78c105f55f839fdf38b

Conversion warnings are treated as errors for example here: https://ci.appveyor.com/project/BenjaminKietzman/arrow/build/job/9cl0vqa8e495knn3#L1126
So IIUC we need to pin gRPC to 1.27 for now.

Upstream PR: https://github.com/grpc/grpc/pull/22557

Issue Links

• is related to: ARROW-8317 [C++] grpc-cpp 1.28.0 from conda-forge causing Appveyor build to fail
• links to: GitHub Pull Request #6820