[Pywikipedia-l] Fwd: [Wikitech-l] serious interwiki.py issues on MW 1.18 wikis

[Andre Engels]

It seems somewhere along the way pywikipedia-l got removed, therefore
forwarding this message, which might be interesting: The problem seems to
not be bot-specific, if it happened that a 'normal' user got to the page
before a bot, he would have seen something very unusual too.

André Engels

---------- Forwarded message ----------
From: Andre Engels <andreengels at gmail.com>
Date: Fri, Sep 30, 2011 at 11:13 AM
Subject: Re: [Wikitech-l] serious interwiki.py issues on MW 1.18 wikis
To: Wikimedia developers <wikitech-l at lists.wikimedia.org>


On Fri, Sep 30, 2011 at 9:39 AM, Ariel T. Glenn <ariel at wikimedia.org> wrote:

> Out of curiosity... If the new revisions of one of these badly edited
> pages are deleted, leaving the top revision as the one just before the
> bad iw bot edit, does a rerun of the bot on the page fail?
>

I did a test, and the result was very interesting, which might point to the
cause of this bug:

I deleted the page [[nl:Blankenbach]], then restored the 2 versions before
the problematic bot edit. When now I look at the page, instead of the page
content I get:

In de database is geen inhoud aangetroffen voor de pagina met .

Dit kan voorkomen als u een verouderde verwijzing naar het verschil tussen
twee versies van een pagina volgt of een versie opvraagt die is verwijderd.

Als dit niet het geval is, hebt u wellicht een fout in de software gevonden.
Maak hiervan melding bij een
systeembeheerder<http://nl.wikipedia.org/wiki/Speciaal:Gebruikerslijst/sysop>van
Wikipedia en vermeld daarbij de URL van deze pagina.


Going to the specific version that after the deletion-and-partial-restore
should be the newest (
http://nl.wikipedia.org/w/index.php?title=Blankenbach&oldid=10676248), it
claims that there is a newer version, but going to the newer version or the
newest version, I get the abovementioned message again.

As an extra test, I did the
delete-then-restore-some-versions-but-not-the-most-recent action with
another page (http://nl.wikipedia.org/wiki/Gebruiker:Andre_Engels/Test), and
there I found no such problem. From this I conclude that the bug has not
been caused by that process, but that for some reason the page had a wrong
(or empty) version number for its 'most recent' version, or something like
that.




-- 
André Engels, andreengels at gmail.com




-- 
André Engels, andreengels at gmail.com
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