https://github.com/python/cpython/commit/38f23604c19d357d9782eb2c1a740c3296c08890
commit: 38f23604c19d357d9782eb2c1a740c3296c08890
branch: 3.14
author: Miss Islington (bot) <[email protected]>
committer: gpshead <[email protected]>
date: 2025-12-30T23:29:56Z
summary:

[3.14] gh-115634: document ProcessPoolExecutor max_tasks_per_child bug 
(GH-140897) (#143302)

gh-115634: document ProcessPoolExecutor max_tasks_per_child bug (GH-140897)
(cherry picked from commit 04899b8539ab83657a4495203f26b3cb1a6f46dc)

Co-authored-by: Gregory P. Smith <[email protected]>

files:
M Doc/library/concurrent.futures.rst

diff --git a/Doc/library/concurrent.futures.rst 
b/Doc/library/concurrent.futures.rst
index c2e2f7f820f4ef..18d92e8e9959a9 100644
--- a/Doc/library/concurrent.futures.rst
+++ b/Doc/library/concurrent.futures.rst
@@ -379,6 +379,11 @@ in a REPL or a lambda should not be expected to work.
    default in absence of a *mp_context* parameter. This feature is incompatible
    with the "fork" start method.
 
+   .. note::
+      Bugs have been reported when using the *max_tasks_per_child* feature that
+      can result in the :class:`ProcessPoolExecutor` hanging in some
+      circumstances. Follow its eventual resolution in :gh:`115634`.
+
    .. versionchanged:: 3.3
       When one of the worker processes terminates abruptly, a
       :exc:`~concurrent.futures.process.BrokenProcessPool` error is now raised.

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