On Fri, May 8, 2015 at 5:12 AM, Marcel Ruiz Forns <mforns(a)wikimedia.org>
EventLogging suffered from performance problems and
data loss from Tuesday
2015-05-05 22:00 UTC to Wednesday 2015-05-06 20:00 UTC (22 hours).
During that period, an exceptional amount of events were sent to EL server
for a given schema. The system could not handle them properly, and this
caused data loss (30%-40% during the period) and some small gaps in the db.
All schemas were affected.
The missing data will be backfilled during this week.
Phab Task: https://phabricator.wikimedia.org/T98588
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