[critical bug] [[MediaWiki:Withoutinterwiki-legend/fr]] : translation mixups: updates are going to the wrong page
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[critical bug] MediaWiki:Withoutinterwiki-legend/fr : translation mixups: updates are going to the wrong page
Translations are sent to the wrong page. Trying to set them correctly, the submission is accepted, but when we refresh the page, we still see an unrelated message, not for this resource, and no change is applied (and no error ever displayed).
And if we look deeper, we see that what was submitted has in fact changed another page, creating a mixup, which then affects multiple other pages.
Very probably problem of index corruption (page or version ID's) in the database (I think there are duplicate ID's in some tables that should be unique), or a previous bad use by some prvilege admin of native SQL update.
As well the histories are mixed up across pages.
A maintenance should be performed to check the database integrity (notably check all table indexes).
It is also likely a problem of the background job queue, which seems to be stalled (recent changes are not fed correctly, statistics are out of sync, page counts are wrong...)n or its backlog of pending jobs is too large, or there's a lack of storage on the server.
I just opened the page MediaWiki:Withoutinterwiki-legend/fr and it really shows the unrelated text, but clicking on "Edit" shows the text correctly.
This was a real bug (https://phabricator.wikimedia.org/T235188) and is what is referenced by the site notice at top. It was affecting transwlatewiki.net stince the beginning of month. The bug was a caching bug on the server. Still it affects some resources displaying incorrect "fuzzy" state (yellow icon) which seem to reoccur again. The issue was real and very strange. Its resolution is partial, as some other glitches are still occuring; the resolution seems to be non definitive because the impact is still not well understood. That's why the site notice at top remains.
Quite certain that these issues started appearing since our deployment last Wednesday (8th Oct, 2019). We should not be seeing this issue on twn any more, but if you do, please ping on the Phab ticket or here.
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