Gluster users - Dec 2016 - Gluster Upgrade from 3.7.3 to 3.7.17

We're running a 9 node 3.7.3 cluster on Ubuntu 14.04 with a variety of
clients. This is a highly utilized cluster and we'd like to upgrade it to
3.7.17. We want to do this with 0 downtime if possible which means we'll
want to do a rolling upgrade. Is such a thing possible and are there any gotchas
when doing it? Would we want to upgrade the clients first or the nodes if we can
do it in a rolling fashion.

Thank You
Sincerely
Garrett Page

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