multiprocessing: passing file descriptor using reduction breaks duplex pipes on darwin
Open
Nobody has claimed this yet.
3.7 (EOL)
OS-mac
stdlib
topic-multiprocessing
type-bug
- Dominant language
- Python
- Stars
- 77.2k
- Forks
- 36k
- PR merge metrics
- PR metrics pending
Description
| BPO | 32220 |
|---|---|
| Nosy | @ronaldoussoren, @pitrou, @ned-deily, @applio |
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 2017-12-05.08:56:06.683>
labels = ['OS-mac', 'type-bug', 'library', '3.7']
title = 'multiprocessing: passing file descriptor using reduction breaks duplex pipes on darwin'
updated_at = <Date 2017-12-06.12:06:38.226>
user = 'https://bugs.python.org/frickenate'
bugs.python.org fields:
activity = <Date 2017-12-06.12:06:38.226>
actor = 'ronaldoussoren'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)', 'macOS']
creation = <Date 2017-12-05.08:56:06.683>
creator = 'frickenate'
dependencies = []
files = []
hgrepos = []
issue_num = 32220
keywords = []
message_count = 5.0
messages = ['307649', '307650', '307700', '307714', '307733']
nosy_count = 5.0
nosy_names = ['ronaldoussoren', 'pitrou', 'ned.deily', 'davin', 'frickenate']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue32220'
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
No specific file or test is named. Start with the multiprocessing reduction path and investigate how file descriptors for duplex pipes are passed on macOS, comparing the behavior with other platforms. Done means duplex pipes no longer break when their descriptors are passed through reduction, with a focused regression test covering the behavior.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- macos, python
- Domain
- backend, operating-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100