Lucas_Werkmeister_WMDE added a comment.
In T255706#9422250 <https://phabricator.wikimedia.org/T255706#9422250>, @Krinkle wrote: > 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. Thanks, that’s good to know. I added it to WikimediaDebug § Limitations <https://wikitech.wikimedia.org/wiki/WikimediaDebug#Limitations> for future reference. In T255706#9423162 <https://phabricator.wikimedia.org/T255706#9423162>, @ArthurTaylor wrote: > We had a dig around to see if we could spot any `addUsagesForPage` jobs being queued in Kafka <https://wikitech.wikimedia.org/wiki/Kafka#kafkacat>, checking the queues on both the `eqiad` and `codfw` brokers because we see in grafana <https://grafana.wikimedia.org/d/CbmStnlGk/jobqueue-job?var-job=wikibase-addUsagesForPage&orgId=1&refresh=5m&var-dc=codfw%20prometheus%2Fk8s> that the jobs run in both datacenters. We tried various commands along the lines of kafkacat -C -b kafka-jumbo1013.eqiad.wmnet:9092 -t codfw.mediawiki.job.wikibase-addUsagesForPage kafkacat -C -b kafka-jumbo1013.eqiad.wmnet:9092 -t eqiad.mediawiki.job.wikibase-addUsagesForPage We saw plenty of jobs being queued (roughly a few million per ten seconds or so), including some on eowiki, but as Arthur said, none for our target page (Perseo). > Our next investigation step will be to instrument the `addUsages` function of `EntityUsageTable` directly to watch for any writes to the target page, and deploy the instrumented code to all hosts. But we'll do that after the holidays. Proposed debug code on PS3 of the debug code Gerrit change <https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Wikibase/+/984848/3>. TASK DETAIL https://phabricator.wikimedia.org/T255706 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: Lucas_Werkmeister_WMDE 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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