Multiprocessing.Pool hangs after re-spawning several worker process.

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#76,067 2 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
30/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
python
Domain
backend, operating-systems

Research direction

Begin with the multiprocessing.Pool entry point and the reported worker respawning scenario; the issue provides no reproduction script, files, or tests. Determine why the pool hangs after several workers are respawned, then add a regression test demonstrating the scenario and confirm that the pool completes normally.

Written by the indexing model from the issue text.

Description

3.7 (EOL) stdlib topic-multiprocessing type-bug
BPO 31886
Nosy @pitrou, @ogrisel, @applio, @tomMoral

Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

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GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2017-10-27.15:10:27.152>
labels = ['3.7', 'type-bug', 'library']
title = 'Multiprocessing.Pool hangs after re-spawning several worker process.'
updated_at = <Date 2017-10-29.11:02:09.684>
user = 'https://bugs.python.org/olarn'

bugs.python.org fields:

activity = <Date 2017-10-29.11:02:09.684>
actor = 'pitrou'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2017-10-27.15:10:27.152>
creator = 'olarn'
dependencies = []
files = []
hgrepos = []
issue_num = 31886
keywords = []
message_count = 2.0
messages = ['305124', '305185']
nosy_count = 5.0
nosy_names = ['pitrou', 'Olivier.Grisel', 'davin', 'tomMoral', 'olarn']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue31886'
versions = ['Python 2.7', 'Python 3.6', 'Python 3.7']

Dominant language
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Merged PRs (30d)
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