Race condition when using multiprocessing BaseManager and Pool in Python3

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
20/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
python
Domain
distributed-systems

Research direction

Start with the linked BPO issue 44155 and PR 26332, then inspect the multiprocessing BaseManager and Pool interaction described in the title. Reproduce the race under Python 3 and compare the behavior with the proposed PR; done means the race is resolved and the relevant behavior is verified by the project’s checks.

Written by the indexing model from the issue text.

Description

3.9 (EOL) stdlib topic-multiprocessing type-bug
BPO 44155
Nosy @Junnplus
PRs
  • python/cpython#26332
    		•

    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 2021-05-17.08:50:27.110>
labels = ['type-bug', 'library', '3.9']
title = 'Race condition when using multiprocessing BaseManager and Pool in Python3'
updated_at = <Date 2021-05-24.14:27:35.818>
user = 'https://bugs.python.org/chenzhuowansui'

    bugs.python.org fields:

    activity = <Date 2021-05-24.14:27:35.818>
actor = 'junnplus'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2021-05-17.08:50:27.110>
creator = 'chenzhuowansui'
dependencies = []
files = []
hgrepos = []
issue_num = 44155
keywords = ['patch']
message_count = 2.0
messages = ['393796', '394240']
nosy_count = 2.0
nosy_names = ['chenzhuowansui', 'junnplus']
pr_nums = ['26332']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue44155'
versions = ['Python 3.9']

    Dominant language
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