Hi all,

In order to upgrade the kernels of various analytics hosts, we have to reboot the machines, which will make several analytics clients temporarily unavailable.

The maintenance will be Friday at 17:00-19:00 UTC (10am-12pm Pacific). While this is happening, the following hosts and services will be temporarily unavailable for a few minutes at a time:

- stat machines (stat1004.eqiad.wmnet etc)

- superset

- turnilo

- hadoop UI, druid UI

If you are planning a long-running query that will overlap with that time, let me know as soon as possible and we'll find a resolution. Respond to this email or come visit us on IRC at #wikimedia-analytics on libera.chat.

Regards,

Razzi