python / python/cpython

Database corruption with the shelve module

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3.10 stdlib type-bug
Dominant language
Python
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Description

BPO 47072
Nosy @malemburg, @terryjreedy, @koobs, @HubTou
Files
  • shelve-test.zip: Small test program to reproduce the bug
  • shelve-test-3.10.zip: Small test program and results
  • shelve-test-3.10-b.zip: Small test program and results, with better record size
  • 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 2022-03-20.17:29:23.398>
    labels = ['type-bug', '3.8', '3.10']
    title = 'Database corruption with the shelve module'
    updated_at = <Date 2022-03-27.12:01:09.272>
    user = 'https://github.com/HubTou'
    

    bugs.python.org fields:

    activity = <Date 2022-03-27.12:01:09.272>
    actor = 'Leilei'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = ['Demos and Tools']
    creation = <Date 2022-03-20.17:29:23.398>
    creator = 'HubTou'
    dependencies = []
    files = ['50693', '50703', '50704']
    hgrepos = []
    issue_num = 47072
    keywords = []
    message_count = 7.0
    messages = ['415625', '416036', '416045', '416063', '416108', '416110', '416119']
    nosy_count = 4.0
    nosy_names = ['lemburg', 'terry.reedy', 'koobs', 'HubTou']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = None
    status = 'open'
    superseder = None
    type = 'behavior'
    url = 'https://bugs.python.org/issue47072'
    versions = ['Python 3.8', 'Python 3.10']
    

    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 running the attached shelve-test.zip reproduction and compare it with the shelve-test-3.10.zip results. Read the Python shelve module while confirming the corruption scenario; done means the reported database corruption is reproduced, understood, and prevented by a verified test.

    Written by the indexing model from the issue text.

    Assessment

    Tech stack
    python
    Domain
    databases
    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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