lidavidm commented on code in PR #13520:
URL: https://github.com/apache/arrow/pull/13520#discussion_r919474247


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cpp/src/arrow/filesystem/gcsfs_test.cc:
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@@ -106,8 +110,27 @@ class GcsTestbench : public ::testing::Environment {
         continue;
       }
 
-      server_process_ = bp::child(exe_path, "-m", "testbench", "--port", 
port_, group_);
-      if (server_process_.valid() && server_process_.running()) break;
+      bp::ipstream output;

Review Comment:
   It seems the server is mostly OK if you explicitly close stdout, from a 
quick test in Python. So I guess things are OK here. 



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