python / python/cpython

shared memory problems with multiprocessing.Pool

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3.8 (EOL) stdlib topic-multiprocessing type-bug
Dominant language
Python
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Description

BPO 40828
Nosy @pitrou, @applio, @vinay0410, @trapezoid677
Files
  • shared_memory.py
  • 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 2020-05-30.17:57:21.554>
    labels = ['3.8', 'type-bug', 'library']
    title = 'shared memory problems with multiprocessing.Pool'
    updated_at = <Date 2020-07-19.07:15:02.005>
    user = 'https://github.com/trapezoid677'
    

    bugs.python.org fields:

    activity = <Date 2020-07-19.07:15:02.005>
    actor = 'vinay0410'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = ['Library (Lib)']
    creation = <Date 2020-05-30.17:57:21.554>
    creator = 'trapezoid677'
    dependencies = []
    files = ['49203']
    hgrepos = []
    issue_num = 40828
    keywords = []
    message_count = 2.0
    messages = ['370396', '373938']
    nosy_count = 4.0
    nosy_names = ['pitrou', 'davin', 'vinay0410', 'trapezoid677']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = None
    status = 'open'
    superseder = None
    type = 'behavior'
    url = 'https://bugs.python.org/issue40828'
    versions = ['Python 3.8']
    

    Contributor guide

    Open the contributing guide

    First steps

    1. Read the whole issue, then the project's contributing guide.
    2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
    3. Fork the repository and make your change on a branch.
    4. Open a pull request that references the issue number.

    Research direction

    Start by reading the linked shared_memory.py file and tracing how it interacts with multiprocessing.Pool. Reproduce the reported shared-memory problem, then confirm that the affected Pool workflow behaves correctly without introducing regressions.

    Written by the indexing model from the issue text.

    Assessment

    Tech stack
    python
    Domain
    distributed-systems
    Issue type
    Bug
    Difficulty
    4/5
    Estimated time
    3-5 days
    Activity status
    Stale
    Clarity
    Needs clarification
    Newbie friendliness
    25/100

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