New submission from Corey Bryant <corey.bry...@canonical.com>:
I initially reported this on launchpad at https://bugs.launchpad.net/bugs/1782647. I'm running a test for a project that hangs and requires a Control-C to cancel it. The results look like this: https://paste.ubuntu.com/p/SwXsCcghjt/ In narrowing down on this some more, the use of queue.SimpleQueue() seems to make the difference that causes the hang. If I switch that back to queue.Queue() (which was the case for py3.6) the hang goes away: - self._work_queue = queue.Queue() + self._work_queue = queue.SimpleQueue() To reproduce with OpenStack designate: git clone https://github.com/openstack/designate. Then, update tox.ini with the following: --- a/tox.ini +++ b/tox.ini @@ -1,6 +1,6 @@ [tox] minversion = 2.0 -envlist = py35,py27,flake8 +envlist = py35,py37,py27,flake8 skipsdist = True [testenv] @@ -39,6 +39,12 @@ commands = {[testenv]commands} stestr run '{posargs}' +[testenv:py37] +basepython = python3.7 +commands = + {[testenv]commands} + stestr run 'designate\.tests\.test_workers\.test_processing\.TestProcessingExecutor\.(test_execute_multiple_tasks)' + [testenv:docs] basepython = python3 deps = And run: tox -e py37 ---------- components: Library (Lib) messages: 322032 nosy: corey.bryant priority: normal severity: normal status: open title: [3.7] possible race condition in /usr/lib/python3.7/concurrent/futures/thread.py type: behavior versions: Python 3.7 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue34173> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
