[MediaWiki-l] InstantCommons - Images disappearing again

David Gerard dgerard at gmail.com
Thu Feb 4 16:39:08 UTC 2016


I came here to post about the same problem. It appears to have broken
this morning. Did the API change again?

On 4 February 2016 at 07:33, Dr. Michael Bonert
<michael at librepathology.org> wrote:
> In September 2014, I described an intermittent recurrent problem associated
> with the InstantCommons images.
>
> I hadn't seen the problem seen since April or May of 2015.
>
> It is now back -- after I upgraded to MediaWiki 1.26.2.
> Unlike in the past, it hasn't resolved with a server re-boot.
>
> I did have record traffic earlier in the week... but the problem --like in
> the past-- doesn't seem to be traffic related.
>
> I cannot find a relation to memory. I'm not running out of memory.
> The underlying LAMP (Debian Linux Apache MySQL PHP) stack hasn't changed.
>
> Product Versions
> Operating System: Debian (stable)
> MediaWiki       1.26.2 (f465524)
> PHP             5.6.13-0+deb8u1 (apache2handler)
> MySQL           5.5.44-0+deb8u1
>
> The details of what is installed is here:
> http://librepathology.org/wiki/index.php/Special:Version
>
> I do have git installed -- and am using it to upgrade.
>
> Like in the past-- the image that is local to the site, i.e.
> non-InstantCommons,
> (
> http://librepathology.org/wiki/index.php/File:Atypical_ductal_hyperplasia_-_very_high_mag.jpg
> )
> is still there-- and displays properly. At the same time, all the images
> from the InstantCommons are gone.
>
>
> A list of previous posts I did can be found here:
> https://lists.wikimedia.org/pipermail/mediawiki-l/2014-September/043340.html
> https://lists.wikimedia.org/pipermail/mediawiki-l/2014-September/043345.html
> https://lists.wikimedia.org/pipermail/mediawiki-l/2014-September/043348.html
> https://lists.wikimedia.org/pipermail/mediawiki-l/2014-September/043349.html
>
> Help on this would be much appreciated...
>
> I have a testing site (pathologyprotocols.org) that is running the exact
> same set-up (behind a login).
> It is also failing suddenly in the same way; the InstantCommons images are
> gone.
>
> I wonder whether...
> - It is the InstantCommons server
> - There is "talk" between the InstantCommons server and a MediaWiki install
> (with the InstantCommons activated).
>     I know this as images that are removed from the InstantCommons... are
> then removed on then
>     MediaWiki install with InstantCommons activated.
>
>     I think the communication is governed by 'descriptionCacheExpiry' and
> 'apiThumbCacheExpiry'
>       https://www.mediawiki.org/wiki/Manual:$wgUseInstantCommons
>       ? I wonder whether setting those to infinity would solve anything.
> - I suspect the thumb cache is purged... and then there is a bug preventing
> the image from being
> confirmed as being the same as on the InstantCommons... or there a
> processing bottle neck as the thumbnails have to be re-created.
>
> Thanks in Advance,
> Michael
>
>
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