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subprocess + stdout redirection + wait + svn= hang #47843

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tebeka mannequin opened this issue Aug 18, 2008 · 2 comments
Closed

subprocess + stdout redirection + wait + svn= hang #47843

tebeka mannequin opened this issue Aug 18, 2008 · 2 comments
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stdlib Python modules in the Lib dir

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@tebeka
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tebeka mannequin commented Aug 18, 2008

BPO 3593
Nosy @gpshead, @tebeka
Files
  • svnout.py
    		•

    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 = <Date 2008-09-22.00:48:40.356>
created_at = <Date 2008-08-18.21:30:27.913>
labels = ['invalid', 'library']
title = 'subprocess + stdout redirection + wait + svn= hang'
updated_at = <Date 2008-09-22.00:48:40.343>
user = 'https://github.com/tebeka'

    bugs.python.org fields:

    activity = <Date 2008-09-22.00:48:40.343>
actor = 'gregory.p.smith'
assignee = 'none'
closed = True
closed_date = <Date 2008-09-22.00:48:40.356>
closer = 'gregory.p.smith'
components = ['Library (Lib)']
creation = <Date 2008-08-18.21:30:27.913>
creator = 'tebeka'
dependencies = []
files = ['11150']
hgrepos = []
issue_num = 3593
keywords = []
message_count = 2.0
messages = ['71385', '73547']
nosy_count = 2.0
nosy_names = ['gregory.p.smith', 'tebeka']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue3593'
versions = ['Python 2.6']
    @tebeka
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    tebeka mannequin commented Aug 18, 2008

    The attached script hangs on Ubuntu + Python 2.5.2.
    When make the limit smaller (like 10) or not redirecting stdout, it works.

    Running the svn command from shell took about 4sec, I gave up on the
    script after a minute.

    I tried it both with svn 1.4.6 and 1.5.1 - no change.

    @tebeka tebeka mannequin added the stdlib Python modules in the Lib dir label Aug 18, 2008
    @gpshead
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    gpshead commented Sep 22, 2008

    This is not a subprocess bug. the os's pipe buffer filled up so the
    process never terminated to be noticed by wait. see:

    http://docs.python.org/dev/library/subprocess.html#subprocess.Popen.wait

    use communicate() instead of wait().

    @gpshead gpshead closed this as completed Sep 22, 2008
    @ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
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