Github user pwendell commented on the pull request:
https://github.com/apache/spark/pull/941#issuecomment-45017653
Hey one of they things about `check_call` is that it would give throw an
exception if the suprocess returned nonzero. Does this have the same behavior?
This is actually is somewhat important because otherwise the script will
happily continue having captured the wrong output and it will downstream throw
an error that is really hard to debug.
I wonder if we should just inline the definition of check_output from
Python 7. That's what's suggested here:
http://stackoverflow.com/questions/4814970/subprocess-check-output-doesnt-seem-to-exist-python-2-6-5
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