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gh-84559: Remove the new multiprocessing warning, too disruptive. (#101551)

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This reverts the core of #100618 while leaving relevant documentation
improvements and minor refactorings in place.
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Gregory P. Smith 2023-02-03 15:20:46 -08:00 • committed by GitHub
parent f6c53b80a1
commit d4c410f0f9
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11 changed files with 27 additions and 189 deletions
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19
Lib/test/test_concurrent_futures.py
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@ -18,7 +18,6 @@ import sys
import threading
import time
import unittest
import warnings
import weakref
from pickle import PicklingError
@ -572,24 +571,6 @@ class ProcessPoolShutdownTest(ExecutorShutdownTest):
assert all([r == abs(v) for r, v in zip(res, range(-5, 5))])
@unittest.skipIf(mp.get_all_start_methods()[0] != "fork", "non-fork default.")
class ProcessPoolExecutorDefaultForkWarning(unittest.TestCase):
def test_fork_default_warns(self):
with self.assertWarns(mp.context.DefaultForkDeprecationWarning):
with futures.ProcessPoolExecutor(2):
pass
def test_explicit_fork_does_not_warn(self):
with warnings.catch_warnings(record=True) as ws:
warnings.simplefilter("ignore")
warnings.filterwarnings(
'always', category=mp.context.DefaultForkDeprecationWarning)
ctx = mp.get_context("fork") # Non-default fork context.
with futures.ProcessPoolExecutor(2, mp_context=ctx):
pass
self.assertEqual(len(ws), 0, msg=[str(x) for x in ws])
create_executor_tests(ProcessPoolShutdownTest,
executor_mixins=(ProcessPoolForkMixin,
ProcessPoolForkserverMixin,