[New-bugs-announce] [issue44733] Feature request: maxtasksperchild for ProcessPoolExecutor

[Ram Rachum]

New submission from Ram Rachum <ram at rachum.com>:

I love `concurrent.futures`, and I'd like to use it wherever I can. There's a feature in `multiprocessing.Pool` that I wish would also be available in `ProcessPoolExecutor`: The `maxtasksperchild` argument.

Documentation: "maxtasksperchild is the number of tasks a worker process can complete before it will exit and be replaced with a fresh worker process, to enable unused resources to be freed. The default maxtasksperchild is None, which means worker processes will live as long as the pool."

I want to be able to set it to 1, so each process will only execute one task and then be replaced with a fresh process.

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components: Library (Lib)
messages: 398143
nosy: cool-RR, pitrou
priority: normal
severity: normal
status: open
title: Feature request: maxtasksperchild for ProcessPoolExecutor
type: enhancement
versions: Python 3.11

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44733>
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