Hi everybody, Tomorrow EU morning (9:00 CET) I'll upgrade the Debian OS on an-coord1001, and several services will need to be stopped: Hive, Oozie, Presto (may also affect Druid, so Turnilo and Superset). The total downtime should be around one hour (best case scenario). Please let me know if this impacts your in https://phabricator.wikimedia.org/T278424 (in case we can find another time window for the downtime). Thanks! Luca (on behalf of the Analytics / Data Engineering team)