lidavidm commented on code in PR #13520:
URL: https://github.com/apache/arrow/pull/13520#discussion_r916273403


##########
cpp/src/arrow/filesystem/gcsfs_test.cc:
##########
@@ -105,9 +106,21 @@ class GcsTestbench : public ::testing::Environment {
         error += " (exe not found)";
         continue;
       }
-
-      server_process_ = bp::child(exe_path, "-m", "testbench", "--port", 
port_, group_);
-      if (server_process_.valid() && server_process_.running()) break;
+      // TODO: should I be worried about lifetime of this variable?
+      bp::ipstream output;

Review Comment:
   This seems like it should be a member variable, yes



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