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corrupted files in the cache
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Description

Reported by @Shonagon in T89552

Hello,
It seems that there are many corrupted files in the cache :
http://zone47.com/crotos/lab/cropper/get.php?q=14619165
http://zone47.com/crotos/lab/cropper/get.php?q=Q1231009
http://zone47.com/crotos/lab/cropper/get.php?q=Q19939091
Actually almost all images I tested (the one that works http://zone47.com/crotos/lab/cropper/get.php?q=21013224 )
By the way, I made a public presention in March about IIIF on Wikimedia projects at IIIF Biblissima meeting in Paris: http://www.biblissima-condorcet.fr/en/indexation-iconographique-sur-projets-wikimedia-iiif . Luckily the service worked well at that time. Many would be very happy to do more, but the instabaility of the service is today unfortunately a major obstacle to the development of IIIF in Wikimedia.
I'm sorry to say that this recurrent issue is very annoying, especially that there is no solution for users to fix it. Although my technical skills are limited, I would be happy to help if I can do something.
Best regards

Example url https://tools.wmflabs.org/zoomviewer/iiif.php?f=Chicago.jpg

Event Timeline

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptMay 18 2018, 2:38 PM

I'm looking into this. I can purge the cache, but there seems to be a fundamental problem that allows these files to get corrupted again and again.

Restricted Application added a project: Wikidata. · View Herald TranscriptMay 18 2018, 2:45 PM
Cavila added a subscriber: Cavila.May 18 2018, 7:00 PM

Thank you to look into this.
Maybe a more stustenable solution would be preferable but if we have the possibility to purge on demand occasionally the cache for corrupted files in cache, it could help a lot. The main issue for now is that when there are corrupted files, there is no solution for users to fix it, except to report the problem, that, as you point, comes up regularly.

action=purge?

Vvjjkkii renamed this task from corrupted files in the cache to vrcaaaaaaa.Jul 1 2018, 1:09 AM
Vvjjkkii triaged this task as High priority.
Vvjjkkii updated the task description. (Show Details)
Vvjjkkii removed a subscriber: Aklapper.
CommunityTechBot renamed this task from vrcaaaaaaa to corrupted files in the cache.Jul 2 2018, 4:01 PM
CommunityTechBot raised the priority of this task from High to Needs Triage.
CommunityTechBot updated the task description. (Show Details)
CommunityTechBot edited projects, added Cloud-Services; removed Hashtags.
CommunityTechBot added a subscriber: Aklapper.
Addshore moved this task from incoming to monitoring on the Wikidata board.Sep 19 2018, 7:08 AM