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bpo-45209: fix `UserWarning: resource_tracker` in test_multiprocessing by sobolevn · Pull Request #28377 · python/cpython · GitHub
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bpo-45209: fix UserWarning: resource_tracker in test_multiprocessing#28377

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ambv merged 4 commits into
python:mainfrom
sobolevn:issue-45209
Sep 21, 2021
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bpo-45209: fix UserWarning: resource_tracker in test_multiprocessing#28377
ambv merged 4 commits into
python:mainfrom
sobolevn:issue-45209

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sobolevn commented Sep 15, 2021 •
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vstinner commented Sep 16, 2021

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cc @pitrou

pitrou changed the title bpo-45209: removes UserWarning: resource_tracker in `test_multiproc… bpo-45209: fix UserWarning: resource_tracker in test_multiprocessing Sep 16, 2021
pitrou reviewed Sep 16, 2021
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Comment thread Misc/NEWS.d/next/Tests/2021-09-15-23-32-39.bpo-45209.55ntL5.rst Outdated Show resolved Hide resolved

sobolevn commented Sep 16, 2021

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All PRs right now have this problem: https://dev.azure.com/Python/cpython/_build/results?buildId=87889&view=logs&j=91c152bd-7320-5194-b252-1404e56e2478&t=c7e99cd8-4756-5292-d34b-246ff5fc615f

Another examples:

vstinner commented Sep 16, 2021

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Windows build error on Azure Pipelines is tracked by: https://bugs.python.org/issue45220

sobolevn commented Sep 18, 2021

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Rebased, CI now passes.

vstinner approved these changes Sep 20, 2021
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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality Hide comment

LGTM. @pitrou: Would you mind to double check this multiprocessing test fix?

I'm kind of unhappy that you have to prepend "/". SharedMemory._prepend_leading_slash does a magic dance (add/remove "/" prefix) with SharedMemory(name) constructor parameter and in SharedMemory.name property. But I don't think that it's worth it to add something just for this very specific test. We can always revisit the code later if we start to have issue on some corner cases.

Comment thread Misc/NEWS.d/next/Tests/2021-09-15-23-32-39.bpo-45209.55ntL5.rst Show resolved Hide resolved

sobolevn commented Sep 20, 2021

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I'm kind of unhappy that you have to prepend "/". SharedMemory._prepend_leading_slash does a magic dance (add/remove "/" prefix) with SharedMemory(name) constructor parameter and in SharedMemory.name property

Yes, me too. I've tried several other things like smm.name (was not producing the correct result by raising KeyError). After several attempts this was the simplest solution. And since we only run this part on posix, it should work correctly.

Thanks, @vstinner and @pitrou

ambv commented Sep 21, 2021

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Since the slash hack is tests-only, let's have it. We can fix the fix later if we find a way to do so.

ambv merged commit f604cf1 into python:main Sep 21, 2021
vstinner added the needs backport to 3.10 only security fixes label Sep 21, 2021

miss-islington commented Sep 21, 2021

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Thanks @sobolevn for the PR, and @ambv for merging it 🌮🎉.. I'm working now to backport this PR to: 3.10.
🐍🍒⛏🤖

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Sep 21, 2021
bpo-45209: fix UserWarning: resource_tracker in test_multiprocessing ( …
0ce2fae
pythonGH-28377) (cherry picked from commit f604cf1) Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

bedevere-bot commented Sep 21, 2021

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GH-28499 is a backport of this pull request to the 3.10 branch.

bedevere-bot removed the needs backport to 3.10 only security fixes label Sep 21, 2021

miss-islington commented Sep 21, 2021

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Thanks @sobolevn for the PR, and @ambv for merging it 🌮🎉.. I'm working now to backport this PR to: 3.9.
🐍🍒⛏🤖

bedevere-bot commented Sep 21, 2021

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GH-28500 is a backport of this pull request to the 3.9 branch.

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Sep 21, 2021
bpo-45209: fix UserWarning: resource_tracker in test_multiprocessing ( …
8a513df
pythonGH-28377) (cherry picked from commit f604cf1) Co-authored-by: Nikita Sobolev <mail@sobolevn.me>
miss-islington added a commit that referenced this pull request Sep 21, 2021
bpo-45209: fix UserWarning: resource_tracker in test_multiprocessing ( …
09e5016
GH-28377) (cherry picked from commit f604cf1) Co-authored-by: Nikita Sobolev <mail@sobolevn.me>
vstinner pushed a commit that referenced this pull request Sep 21, 2021
bpo-45209: fix UserWarning: resource_tracker in test_multiprocessing ( …
65268ab
GH-28377) (GH-28500) (cherry picked from commit f604cf1) Co-authored-by: Nikita Sobolev <mail@sobolevn.me>
vstinner mentioned this pull request Apr 10, 2022
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