[21:35] < legoktm> so, the CentralAuth db had references to a "vewikimedia", which at one point was connected to SUL. It was recently re-opened as a fishbowl, meaning it's not SUL and CA isn't installed. But a user who the db thought existed on vewikimedia was global renamed, and it queued a job on vewikimedia except the job class doesn't exist there

[21:37] < legoktm> legoktm@terbium:~$ mwscript showJobs.php --wiki=vewikimedia --group <-- outputs nothing

The crazy volume of this exception event may be what is killing logstash as well.

(See also T87264: Remove references to vewikimedia in centralauth database)

I tried this:

$ mwscript eval.php --wiki=vewikimedia
> print_r( JobQueueGroup::singleton()->get('LocalRenameUserJob')->getSize() );
1
> print_r( JobQueueGroup::singleton()->get('LocalRenameUserJob')->delete() );

> print_r( JobQueueGroup::singleton()->get('LocalRenameUserJob')->getSize() );
1

@Tgr found a way to kill jobs from redis for T87040#984282 (path refers to tin), perhaps the same thing could be used here.

Although getSize now returns 0 for me, the exception log is still getting flooded.

Just deleting vewikimedia would solve this problem? It's currently not in use and they requested that it should be a redirect to their current wiki instead. See T57737 and linked bugs.

In T87360#989960, @Krenair wrote:

@Tgr found a way to kill jobs from redis for T87040#984282 (path refers to tin), perhaps the same thing could be used here.

Trying to purge directly via redis commands as used in T87040#984282:

LPOP vewikimedia:jobqueue:LocalRenameUserJob:l-unclaimed
ZREMRANGEBYRANK vewikimedia:jobqueue:LocalRenameUserJob:z-claimed 0 10
ZREMRANGEBYRANK vewikimedia:jobqueue:LocalRenameUserJob:z-abandoned 0 10
ZREMRANGEBYRANK vewikimedia:jobqueue:LocalRenameUserJob:z-delayed 0 10

$ redis-cli -a $PASSWORD -h rdb1003 < redis-vewikimedia-clear.txt
(nil)
(integer) 0
(integer) 0
(integer) 0

Log continues to flood.

Trying to make the answers here easier to find the next time I'm looking for them by adding the job queue and runner projects.