Team:
Please see the recent incident report for eventlogging [1], [2]
TL;DR After addition of some EventBus events to MySQL we had an issue with
insertion of events in which some events were dropped. This affected all
schemas. Events for al schemas have been backfilled as of now.
[1]
https://wikitech.wikimedia.org/wiki/Incident_documentation/20170711-EventLo…
[2]
https://wikitech.wikimedia.org/wiki/Analytics/Systems/EventLogging#Changes_…