Based my understanding, the work needed here is to recreate the entries of Liangent's user pages in the page table (as @Func's queries show the revisions are still in revision); or move those affected revisions to archive and undelete the pages. Are these usually resolved with ad hoc scripts, or more general maintenance scripts would be needed?

Closing as StructuredDiscussions is being decommissioned.

Use case has been identified and an expensive DBA workaround unofficially exists. Moving to "Needs refinement" for product prioritization.

Please do not assign people without their consent - thanks.

Deeply sorry to bother you, but could you help fix this decade-long issue? Or do you know anyone that can claim this task?

Removing from MWI board.

Apparently there was a big backlog. Not sure if that means there were too many rename jobs, or some other type of job was competing for resources. Not sure if we have a dashboard for total job volume, rather than rates.

In T306757#10751727, @Tgr wrote:

Do you have a sense of when it became slow?

Grafana says it's usually 1s/wiki which doesn't sound bad.

Do you have a sense of when it became slow?

Sorry for using this old task, but please note that the process is currently slow again, even if renames don't seem stuck

Reopen, since this just mean we don't need to mention it in "Writing an extension for deployment". The second point "Create a new manual page about usernames and IDs" is still valid.

UserMerge on Wikimedia is long gone.

Change #528205 abandoned by Urbanecm:

[mediawiki/extensions/CentralAuth@master] Create "vanish" option in Special:GlobalRenameRequest

https://gerrit.wikimedia.org/r/528205

Giving this back to Paladox, as he did most of the actual work. I just did a little tweak to that.

Change #329810 merged by jenkins-bot:

[mediawiki/extensions/CentralAuth@master] Add intro/summary text on top of Special:GlobalRenameUser

https://gerrit.wikimedia.org/r/329810

Reviving this old patch, let's see what happens.