Comments - Upgrading from MariaDB 10.0 to 10.1 under Windows
Content reproduced on this site is the property of its respective owners,
and this content is not reviewed in advance by MariaDB. The views, information and opinions
expressed by this content do not necessarily represent those of MariaDB or any other party.
Backward compatibility is assured. If a master on 10.1 generated a binary log message that the slave couldn't understand then replication would stop therefore don't do this. Always upgrade slaves before masters.