When MariaDB encounters a deadlock, the suggestion in the error message is to retry the transaction:

ERROR 1213 (40001): Deadlock found when trying to get lock;

try restarting transaction

It might be useful if MariaDB Connector/J could automatically retry a transaction if the server sends a deadlock error when it attempts to commit the transaction.

There should probably be a limit on the number of retries, so that infinite retry loops can't occur.