Commits

Sutou Kouhei authored a70cf783364
ARROW-6927: [C++] Add gRPC version check We need gRPC++ 1.17.0 or later. Closes #5689 from kou/cpp-grpc-required-version and squashes the following commits: 6a131aa9d <Sutou Kouhei> Add gRPC version check Authored-by: Sutou Kouhei <kou@clear-code.com> Signed-off-by: Sutou Kouhei <kou@clear-code.com>