Commits
Sutou Kouhei authored and GitHub committed e086bbf48cf
GH-41780: [C++][Flight][Benchmark] Ensure waiting server ready (#41793) ### Rationale for this change We should read from result stream to get an error of this RPC. If we don't read from result stream, we can't detect an error of this RPC. ### What changes are included in this PR? Call `Drain()` to detect an error. ### Are these changes tested? Yes. ### Are there any user-facing changes? No. * GitHub Issue: #41780 Authored-by: Sutou Kouhei <kou@clear-code.com> Signed-off-by: Sutou Kouhei <kou@clear-code.com>