Understand the support status of this statement. Originally designed for NDB Cluster, it is not currently supported in MariaDB Server.
The ALTER LOGFILE GROUP statement is not supported by MariaDB. It was originally inherited from MySQL NDB Cluster. See MDEV-19295 for more information.
Syntax
ALTER LOGFILE GROUP logfile_group
ADD UNDOFILE 'file_name'
[INITIAL_SIZE [=] size]
[WAIT]
ENGINE [=] engine_name