New submission from Alexander Tsvetkov <xflo...@gmail.com>:
If more than one thread is waiting for the multiprocessing.pool.AsyncResult (aka ApplyResult) returned from apply_async, only one thread will be notified once the result arrives. It happens because AsyncResult._set calls notify upon the result arrival, not notify_all. threading.Event used in Python 3 uses notify_all. Reproduction script is attached. Expected outcome: 1 1 is printed to STDOUT. Observed outcome: The script hangs. ---------- components: Library (Lib) files: async_result_demo.py messages: 323323 nosy: AlexWithBeard priority: normal severity: normal status: open title: AsyncResult.get() only notifies one thread versions: Python 2.7 Added file: https://bugs.python.org/file47736/async_result_demo.py _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue34367> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
