Hive and Oozie unavailable for maintenance on Wed 26th 9 AM CEST
as part of https://phabricator.wikimedia.org/T225306 I need to reboot the
an-coord1001 host, that runs the Hive server/metastore and Oozie. Tomorrow
June 26th I'll reboot the host at around 9 AM CEST, the maintenance window
should last 10/15 minutes more or less. This means that hive jobs might
fail during that timeframe, please let me know if it is a problem.