Dan Burkert has posted comments on this change.

Change subject: Add option to set CWD to Subprocess
......................................................................


Patch Set 2:

(7 comments)

http://gerrit.cloudera.org:8080/#/c/7176/2/src/kudu/util/subprocess-test.cc
File src/kudu/util/subprocess-test.cc:

PS2, Line 140: Test that environment variables can be passed to the subprocess
> stale comment?
Done


Line 147:   p.SetCurrentDir(DirName(kTestFilePath));
> I imagine the cwd of a gtest isn't the same as GetTestPath(""), but just in
Done


PS2, Line 150:   FILE* in = fdopen(p.from_child_stdout_fd(), "r");
             :   PCHECK(in);
             :   char buf[1024];
             :   ASSERT_EQ(buf, fgets(buf, sizeof(buf), in));
             :   ASSERT_STREQ("foo\n", &buf[0]);
             :   ASSERT_OK(p.Wait());
> Does the output of ls actually matter? How about just using p.GetExitStatus
Done


http://gerrit.cloudera.org:8080/#/c/7176/2/src/kudu/util/subprocess.cc
File src/kudu/util/subprocess.cc:

Line 426:         PLOG(ERROR) << "Unable to set subprocess current directory to 
" << cwd_;
> I think PCHECK() would be net fewest lines of code. We already use it on L4
Done


Line 693: void Subprocess::SetEnvVars(std::map<string, string> env) {
> Nit: could you drop the std:: prefix from map too?
Done


Line 697: void Subprocess::SetCurrentDir(string cwd) {
> We should check that the subprocess hasn't yet started. Same goes for SetEn
Done


http://gerrit.cloudera.org:8080/#/c/7176/2/src/kudu/util/subprocess.h
File src/kudu/util/subprocess.h:

PS2, Line 80: SetCurrentDir
> Agreed that setting it at construction time would be nice; then cwd_ could 
It's already somewhat of a builder for itself, there are already a bunch of 
options that can only be set by constructing it first, setting them, then 
starting it.


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Gerrit-MessageType: comment
Gerrit-Change-Id: I73dc4983b0074312623790ce026e6ad88439df89
Gerrit-PatchSet: 2
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Dan Burkert <[email protected]>
Gerrit-Reviewer: Adar Dembo <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Andrew Wong <[email protected]>
Gerrit-Reviewer: Dan Burkert <[email protected]>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Tidy Bot
Gerrit-HasComments: Yes

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