Krinkle added a comment.
In T255706#9415091 <https://phabricator.wikimedia.org/T255706#9415091>, @Lucas_Werkmeister_WMDE wrote: > […] I’m also not entirely sure if mwdebug ensures that jobs queued by it only run on mwdebug as well; […] Not only do we not ensure this, jobs never run somewhere besides jobrunners. Not on regular appservers, api_appservers, mwmaint, or indeed mwdebug servers. Queuing a job adds an event to Kafka, after which the jobrunner (changeprop-jobqueue at WMF) executes them over RPC on jobrunner servers. Origin hostname is not part of job metadata, and given the longevity of some jobs (e.g. video transcode, and recursive refreshLinks) we might not want to (always) run jobs on mwdebug. Having a way to construct and then run a single concrete job on mwmaint or mwdebug shell would definitely be nice though, i.e. without queuing it. This is currently possible via eval.php, but we don't have documented examples of this afaik. Doing so would allow you to capture the verbose debug output of it (e.g. eval.php -d 2). The other option you have for jobs, is the AdhocDebug channel <https://wikitech.wikimedia.org/wiki/Debugging_in_production#Ad-hoc_log_messages>, which is enabled even in production. You'd want to make sure the job is low frequency, or make the logger conditional in a wmf-branch patch to certain page titles only (or other job params). TASK DETAIL https://phabricator.wikimedia.org/T255706 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: Krinkle Cc: ArthurTaylor, hoo, Lucas_Werkmeister_WMDE, ItamarWMDE, Ladsgroup, Krinkle, eprodromou, aaron, Michael, Aklapper, thcipriani, Danny_Benjafield_WMDE, Isabelladantes1983, Themindcoder, Adamm71, Jersione, Hellket777, LisafBia6531, Astuthiodit_1, 786, Biggs657, karapayneWMDE, Invadibot, maantietaja, Juan90264, Alter-paule, Beast1978, Un1tY, Akuckartz, Hook696, darthmon_wmde, Rosalie_WMDE, Kent7301, joker88john, CucyNoiD, Nandana, Gaboe420, Giuliamocci, Cpaulf30, Lahi, Gq86, Af420, Bsandipan, GoranSMilovanovic, QZanden, LawExplorer, Lewizho99, Maathavan, _jensen, rosalieper, Neuronton, Scott_WUaS, Verdy_p, Wikidata-bugs, aude, Jdforrester-WMF, Mbch331, Jay8g
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