wmf.amgine3691 wrote:

Is this a dupe of #31680 ?

(In reply to comment #1)

Is this a dupe of #31680 ?

Seems kind of unlikely because if none of the images on the europe squids were getting purged like in bug 31680, I feel there would be a lot more anger (so same symptom different cause). This appears to be a more one-time incident.

I would guess (this is just a guess, I haven't even looked at said images or looked into this at all), was that a (HTCP) packet just happened to be lost somewhere which resulted in a stale cache entry not being purged. After all, HTCP does send udp packets, and there's nothing checking they actually get through, so if a packet gets dropped it just dissapears. (OTOH if this happens often perhaps there's some issue that comes up when mediawiki has to purge large number of thumbnails [since djvu files have 100's of pages, so a purge might be thousands of images]). But to re-iterate that's all idle speculation.

Is the image still bad if one does ?action=purge on the image description page?

https://commons.wikimedia.org/wiki/File:Southern_Life_in_Southern_Literature.djvu?action=purge didn't help (yet).

This works for me. Page 340 at 600px displays the correct page even when loading from esams. Re-open if you're still having issues

(In reply to Andre Klapper from comment #3)

https://commons.wikimedia.org/wiki/File:Southern_Life_in_Southern_Literature.
djvu?action=purge didn't help (yet).
Summary: DjVu thumbs failing → DjVu thumbs failing (fuzzy black image; 2144×3282px)

The black fuzzy image on page 1 is the cover of the book. That's supposed to be like that.