[issue33997] multiprocessing Pool hangs in terminate()

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[issue33997] multiprocessing Pool hangs in terminate()

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[issue33997] multiprocessing Pool hangs in terminate()

Alex Hall added the comment: Sorry, I should have looked around more, I think my problem is https://bugs.python.org/issue22393 -- ___ Python tracker ___ _

[issue33997] multiprocessing Pool hangs in terminate()

Alex Hall added the comment: I'm also experiencing hanging on terminate. I haven't made a debug build or anything but it's happening to me consistently on 3.8, although I haven't managed to create a small example to reproduce. Replacing pool.py with https://raw.githubusercontent.com/python/c

[issue33997] multiprocessing Pool hangs in terminate()

Rémi Lapeyre added the comment: Removed Python 3.6 as it is in security fixes now. -- versions: +Python 3.8, Python 3.9 -Python 3.6 Added file: https://bugs.python.org/file48532/test_multiprocessing.py ___ Python tracker

[issue33997] multiprocessing Pool hangs in terminate()

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[issue33997] multiprocessing Pool hangs in terminate()

Rémi Lapeyre added the comment: Hi, I got bit by this bug last week, I wrote an example that reproduce the basic idea of our program main loop and it hangs - around 20% of the time with a release build of Python 3.7.4 - around 6% of the time with a debug build of Python 3.7, 3.8 and 3.9 Wit

[issue33997] multiprocessing Pool hangs in terminate()

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[issue33997] multiprocessing Pool hangs in terminate()

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[issue33997] multiprocessing Pool hangs in terminate()

Erik Wolf added the comment: To help get an idea of the racing condition I created a trace with several additional debug outputs in pool.py and connection.py "=== Creating new pool ===" marks a new start of a pool using the Pool.imap() function. The iteration is terminated at some ti

[issue33997] multiprocessing Pool hangs in terminate()

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[issue33997] multiprocessing Pool hangs in terminate()

Change by Roundup Robot : -- keywords: +patch pull_requests: +7614 stage: -> patch review ___ Python tracker ___ ___ Python-bugs-li

[issue33997] multiprocessing Pool hangs in terminate()

New submission from Erik Wolf : The terminate() method of multiprocessing.Pool hangs sporadically. I could track this issue down to the fact that _handle_results() hangs in the outqueue-cleanup. poll() returned True but get() actually hangs endlessly never returning any data. -- compo