[New-bugs-announce] [issue39104] ProcessPoolExecutor hangs on shutdown nowait with pickling failure

[Thomas Moreau]

New submission from Thomas Moreau <thomas.moreau.2010 at gmail.com>:

The attached scripts hangs on python3.7+.
This is due to the fact that the main process closes the communication channels directly while the queue_management_thread might still use them.

To prevent that, all the closing should be handled by the queue_management_thread.

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components: Library (Lib)
files: main.py
messages: 358697
nosy: tomMoral
priority: normal
severity: normal
status: open
title: ProcessPoolExecutor hangs on shutdown nowait with pickling failure
versions: Python 3.7, Python 3.8, Python 3.9
Added file: https://bugs.python.org/file48794/main.py

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39104>
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