Re: Call for Testers! Cheetah v2.2.0rc1

On Fri, May 15, 2009 at 06:32:02PM +0200, Jean-Baptiste Quenot wrote:
> 2009/5/15 R. Tyler Ballance <[email protected]>:
> > On Wed, May 13, 2009 at 11:13:35AM -0700, R. Tyler Ballance wrote:
> >
> > So far with testing internally at Slide.com, v2.2.0rc1 looks pretty
> > good, but I added a change to DummyTransaction (a faux-WebWare class
> > that's used in the generation of the actual output from Cheetah) to help
> > highlight issues when a UnicodeDecodeError is raised [1]
> 
> Hey!  That's great!  We keep getting UnicodeDecodeErrors as well here,
> and it often involves manual compiling and inspection, and sometimes
> also dirty "print foo" magic directly added in the installed cheetah
> modules with sudo :-) :-) :-)
> 
> I just installed the rc2 on our dev servers and tested the new error
> handling, it's way more useful.

We had a couple as well, and the printing has helped us find out a
number of cases where we were encoding strings (to cope with previous
broken behavior) and all I needed to do was remove the encoding madness.

Sidenote: If you use the EncodeUnicode filter from the old wiki, it
*will* break things under v2.2.0 (removing it corrects things however)


> Apart from the fact that Unicode errors (and NameMapper errors) are
> hard to debug, everything's fine for us with this release.  It is used
> in production with success and happily serves half a million of
> requests everyday.  I still have a random python segfault sometimes,
> but couldn't find out where it comes from yet.  Hope it does not come
> from the name mapper shared object :-)  It might also be caused by any
> of the other third-party Python modules I'm using.


Interesting, I've not experienced core dumps with Cheetah in quite a
long time, if you could get a backtrace from gdb on one of those core
dumps it'd be quite useful to see where it's coming from. 

In case you're not gdb-savvy, just:
	% gdb /usr/bin/python corefile
	(gdb) bt

Then pasting the printout (or if it contains sensitive info, you can
email me offlist) and we can analyze it.


Cheers
-- 
-R. Tyler Ballance
Slide, Inc.

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