Enabling the allowMultiQueries option in the JDBC URL to execute multiple queries in one statement in MySQL breaks batch inserts of more than one statement. This works in MySQL Connector/J. I'm not sure if this happens when connecting to real MariaDB, but my guess is yes.

It spews out a syntax error like this:

org.mariadb.jdbc.internal.common.QueryException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ';insert into example.usage (`event_uuid`) values ('abc')' at line 1

A self contained example that reproduces the problem is located here: https://github.com/ProjectMoon/mariadb-batch-insert-bug