[Zope-dev] Re: How bad _are_ ConflictErrors

[Michael Dunstan]

On 11/22/05, Florent Guillaume <fg at nuxeo.com> wrote:
> Dennis Allison wrote:
> > *** you are correct -- this is the easy hack on the event.log.  It's much
> > harder to know how many make it out to the user.  We have an associated
> > bug in the MySQL interface which generates threading errors, apparently
> > triggered by a conflict error and the subsequent backout.  These occur
> > with most conflicts which involve the database--almost every conflict with
> > our system structure.
>
> I'm actually not sure what's logged when a Conflict Error makes it back
> to the users, offhand I don't see anything in my logs. Can someone
> confirm or infirm that fact?
>
> If nothing is logged, I'll add something at level ERROR.
>
> BTW does someone have a handy script to provoke conflict errors on a
> naked Zope?

There is a doctest that might be useful here. See the last half of
testPublisher() in lib/python/ZPublisher/tests/testPublish.py which
tests the behavior of the publisher in the face of one or more
ConflictErrors.