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Bug 815176 - python package need to be updated to eliminate Pipe and Thread bugs
Summary: python package need to be updated to eliminate Pipe and Thread bugs
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: python
Version: 6.4
Hardware: x86_64
OS: Linux
unspecified
high
Target Milestone: rc
: ---
Assignee: Dave Malcolm
QA Contact: BaseOS QE - Apps
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2012-04-23 03:11 UTC by wenchao xia
Modified: 2012-04-24 07:28 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2012-04-24 07:28:17 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description wenchao xia 2012-04-23 03:11:22 UTC 
Description of problem:
    python with a version lower than v2.7.3 and v3.2, have bad bugs in Pipe and
Thread, it is a race condition.

Version-Release number of selected component (if applicable):
v2.7.2

How reproducible:
    often but not every time.


Steps to Reproduce:
1. download the attachment as a test script.
2. run it for several times.
3. observe that if thread 1 hangs.

Actual results:
   sometimes it hangs.

Expected results:
   it should never hang.

Additional info:
    Python 2.7.3 was just released on 11 April 2012, and my test script passed
on it. When I spy on the source code of cpython project, I found no special
patch fixing the bug, and the information I got is that many subprocess changes
was back ported from python3.2+, and the mechanisms changes. Related python
issue track:
    http://bugs.python.org/issue2320
    I tested my script on some version of Python: result is:
    Python3: later than Python v3.2.2, pass.
    Python2: Python v2.7.3, pass. Python v2.7.2, fail. Python v2.7.2+(ubuntu),
fail.
Comment 2 wenchao xia 2012-04-23 03:16:15 UTC 
it is duplicated from
https://bugzilla.redhat.com/show_bug.cgi?id=814492

and want to confirm whether update package is available in el6.
Comment 3 wenchao xia 2012-04-24 07:28:17 UTC 
tested on python2.6.6 on rhel6.2, unable to reproduce it.
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