reproducible deadlock with multiprocessing.Pool
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3.7 (EOL)
stdlib
topic-multiprocessing
type-bug
- Dominant language
- Python
- Stars
- 77.2k
- Forks
- 36k
- PR merge metrics
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Description
| BPO | 35267 |
|---|---|
| Nosy | @pitrou, @vstinner, @jfgossage, @applio, @pablogsal, @Windsooon |
| PRs | |
| Files |
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 2018-11-17.01:06:38.878>
labels = ['3.7', 'type-bug', 'library']
title = 'reproducible deadlock with multiprocessing.Pool'
updated_at = <Date 2019-09-11.13:12:25.823>
user = 'https://bugs.python.org/dzhu'
bugs.python.org fields:
activity = <Date 2019-09-11.13:12:25.823>
actor = 'davin'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2018-11-17.01:06:38.878>
creator = 'dzhu'
dependencies = []
files = ['47937', '47979', '47980']
hgrepos = []
issue_num = 35267
keywords = ['patch']
message_count = 8.0
messages = ['330017', '330018', '330202', '330968', '331260', '331401', '331403', '351856']
nosy_count = 8.0
nosy_names = ['pitrou', 'vstinner', 'Jonathan.Gossage', 'davin', 'pablogsal', 'Windson Yang', 'dzhu', 'nconway']
pr_nums = ['11143']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue35267'
versions = ['Python 3.6', 'Python 3.7']
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by running the reproducer in lock.py and compare its behavior with lock1.py and lock1.result.txt. Review PR python/cpython#11143 and the multiprocessing library code it changes; done means the reproducible deadlock is resolved and the relevant tests pass.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- operating-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 25/100