Last modified: 2012-07-30 20:30:40 UTC
URL goes to one example. Compiled lists of those (that I could find) on enwiki and commonswiki: http://toolserver.org/~overlordq/404commons_path.txt http://toolserver.org/~overlordq/404images_path.txt
Gmaxwell was kind enough to restore 4 of these images from backups he had, but these four images triggered another bug. As talked about in #wikimedia-tech yesterday there were images that were sharing the sha1 hash of 'phoiac9h4m842xq45sp7s6u21eteeq1' This was attributed to them being 'old' from before images were sha1'd. However, all 4 of the images Gmaxwell uploaded have the same hash of phoiac9h4m842xq45sp7s6u21eteeq1. Don't know if this is related or not, but action=purge doesnt seem to be fixing the problem as it did with the previous set of images.
(In reply to comment #1) > Gmaxwell was kind enough to restore 4 of these images from backups he had, but > these four images triggered another bug. > > As talked about in #wikimedia-tech yesterday there were images that were > sharing the sha1 hash of 'phoiac9h4m842xq45sp7s6u21eteeq1' This was attributed > to them being 'old' from before images were sha1'd. > > However, all 4 of the images Gmaxwell uploaded have the same hash of > phoiac9h4m842xq45sp7s6u21eteeq1. Don't know if this is related or not, but > action=purge doesnt seem to be fixing the problem as it did with the previous > set of images. > See also bug 17051. phoiac9h4m842xq45sp7s6u21eteeq1 is the hash of the empty string, which suggests some breakage in the SHA-1 hashing code. This seems to be fixed, however, as I just re-uploaded [[commons:File:5von10.jpg]] (which previously had phoiac9h4m842xq45sp7s6u21eteeq1 as hash) over itself which caused it to get the right hash (or at least a hash different from phoiac9h4m842xq45sp7s6u21eteeq1). There are also images (and old revisions of images) with img_sha1='' out there, which is probably a symptom of yet another former bug. Useful lists: Last 5 revisions of [[commons:File:5von10.jpg]]: http://commons.wikimedia.org/w/api.php?action=query&titles=File:5von10.png&gdflimit=max&prop=imageinfo&iiprop=sha1|user|comment|timestamp&iilimit=5 List of files with the same hash as [[commons:File:Amphipodredkils.jpg]]: http://commons.wikimedia.org/w/api.php?action=query&titles=File:Amphipodredkils.jpg&generator=duplicatefiles&gdflimit=max&prop=imageinfo&iiprop=sha1
seems to be fixed.
