Hi all,

A bug in the code that imports EventLogging data into Hive caused top 3 level EventCapsule fields to be set to NULL in all Hive EventLogging tables since 2018-11-29T17:00:00.  The affected fields were recvFrom, seqId, and (more importantly) userAgent.

We've fixed the bug, and are backfilling the data now.

Sorry for the inconvenience!  Follow the phabricator ticket to get updates on when backfilling has completed.

-Andrew Otto
 Systems Engineer, WMF