Curious why supervisord wouldn't use python's built-in log file rotation
mechanism (e.g.,
http://docs.python.org/library/logging.html#rotating-file-handler)?

- Rob


On Wed, Dec 1, 2010 at 11:46 AM, whit <w...@surveymonkey.com> wrote:

> resending with patch heading to follow list convention.
>
> whit wrote:
> > When using a single filename for multiple processes, one may observe the
> > following behavior::
> >
> > * normal logging until the file reaches maxbytes
> >
> > * above maxbytes:
> >    - erratic and prolific creation backups
> >    - logging to backups
> >    - backups that are significantly less than maxbytes
> >
> > What happens here is that os.rename does not close handle other
> > RotatingFileHandler instances have open, leaving them to attempt to
> > rotate the previously open handle after they log.  Since, if I
> > understand correctly, open handles track by inode rather than filename,
> > already rotated files get written to and erroneously renamed.
> >
> > A fix for this is contained within the following patches.  The first is
> > specific to python 2.6, the other should be compatible with any version
> > of python that has newstyle classes.  I have only tested it with 2.6 and
> > 2.7.
> >
> > Python 2.6 implementation
> >
> >
> https://github.com/SurveyMonkey/supervisor/commit/ce7db09db8ffe1aee269778a187e4c41ff319609
> >
> >
> > BW compat version
> >
> >
> https://github.com/SurveyMonkey/supervisor/commit/d01dc1a590f1ee662d4f7f619a371959386ee0ea
> >
> >
> >
> > -w
> >
>
>
> --
>  >>>
> Whit Morriss
> CodeMonkey
> w...@surveymonkey.com
>
> -- We're hiring pythonista: http://bit.ly/cT0ELi --
>
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