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concurrent.futures.ProcessPoolExecutor does not properly reap jobs and spawns too many workers #83388

@yus2047889

Description

@yus2047889
mannequin
BPO 39207
Nosy @gpshead, @brianquinlan, @pitrou, @methane, @miss-islington, @aeros, @yus2047889
PRs
  • bpo-39207: Spawn workers on demand in ProcessPoolExecutor #19453
  • 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 = 'https://github.com/aeros'
    closed_at = <Date 2020-04-19.14:01:20.866>
    created_at = <Date 2020-01-03.21:44:04.541>
    labels = ['type-bug', 'library', '3.9']
    title = 'concurrent.futures.ProcessPoolExecutor does not properly reap jobs and spawns too many workers'
    updated_at = <Date 2022-01-21.23:35:45.178>
    user = 'https://github.com/yus2047889'

    bugs.python.org fields:

    activity = <Date 2022-01-21.23:35:45.178>
    actor = 'gregory.p.smith'
    assignee = 'aeros'
    closed = True
    closed_date = <Date 2020-04-19.14:01:20.866>
    closer = 'pitrou'
    components = ['Library (Lib)']
    creation = <Date 2020-01-03.21:44:04.541>
    creator = 'yus2047889'
    dependencies = []
    files = []
    hgrepos = []
    issue_num = 39207
    keywords = ['patch']
    message_count = 10.0
    messages = ['359260', '359270', '359778', '359958', '359960', '359962', '360023', '365291', '366779', '411209']
    nosy_count = 7.0
    nosy_names = ['gregory.p.smith', 'bquinlan', 'pitrou', 'methane', 'miss-islington', 'aeros', 'yus2047889']
    pr_nums = ['19453']
    priority = 'normal'
    resolution = 'fixed'
    stage = 'resolved'
    status = 'closed'
    superseder = None
    type = 'behavior'
    url = 'https://bugs.python.org/issue39207'
    versions = ['Python 3.9']

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    3.9 (EOL)end of lifestdlibStandard Library Python modules in the Lib/ directorytype-bugAn unexpected behavior, bug, or error

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