Hi folks,

I know there is a bunch of usage of subprocess in openstack and especially since there is heavy usage of python 2.7 it made me wonder if we should try to move to subprocess32 to avoid some of the bugs that seem to exist (maybe distributors backported them?):

For example a major one (seems to be):

- https://github.com/google/python-subprocess32/commit/6ef1fea55

"""Popen.wait() is now thread safe so that multiple

threads may be calling wait() or poll() on a Popen instance at the same time
  without losing the Popen.returncode value.

That one concerns me slightly, because I know that certain openstack projects do use threads (and not eventlet monkey-patched green-thread hybrids).

TLDR; should we (could we?) switch?


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