[issue10305] Cleanup up ResourceWarnings in multiprocessing

[STINNER Victor]

STINNER Victor added the comment:

Oh, I found the issue #25654 which contains more information and even patches.

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superseder:  -> test_multiprocessing_spawn ResourceWarning with -Werror

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[issue10305] Cleanup up ResourceWarnings in multiprocessing

[STINNER Victor]

STINNER Victor added the comment:

Sorry but without any information about the module or function which emits such 
ResourceWarning, I prefer to close the issue.

Anyway, with Python 3.6, it became trivial to identify the root cause of 
ResourceWarning warinings:
https://docs.python.org/dev/whatsnew/3.6.html#warnings

So it should now be much easier to fix them.

--
nosy: +haypo
resolution:  -> out of date
status: open -> closed

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[issue10305] Cleanup up ResourceWarnings in multiprocessing

[Brian Curtin]

Changes by Brian Curtin :


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nosy:  -brian.curtin

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[issue10305] Cleanup up ResourceWarnings in multiprocessing

[Mark Lawrence]

Mark Lawrence added the comment:

I've looked at managers.py and can't see any evidence that the sockets are ever 
closed.  Please check this out as I can't believe that a technical problem like 
this could have been around for so long without someone else spotting it during 
testing, thus meaning that my eyesight is deficient.

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nosy: +BreamoreBoy, jnoller, sbt
versions: +Python 2.7, Python 3.4, Python 3.5 -Python 3.2

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[issue10305] Cleanup up ResourceWarnings in multiprocessing

[Ask Solem]

Ask Solem  added the comment:

ah, this is something I've seen as well, its part of a bug that I haven't 
created an issue for yet.

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[issue10305] Cleanup up ResourceWarnings in multiprocessing

[Brian Curtin]

New submission from Brian Curtin :

As shown in a debug run of test_multiprocessing, at least two places in 
managers.py apparently leave open sockets. Lines 786 and 805 are the culprits, 
both util log lines.

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components: Library (Lib)
messages: 120367
nosy: asksol, brian.curtin
priority: normal
severity: normal
stage: needs patch
status: open
title: Cleanup up ResourceWarnings in multiprocessing
type: resource usage
versions: Python 3.2

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