Pre-General Availability Draft: 2017-11-24
This section describes temporary limitations introduced with the MySQL data dictionary.
Manual creation of database directories under the data directory (for example, with mkdir) is unsupported. Manually created database directories are not recognized by the MySQL Server.
Moving data stored in
MyISAMtables by copying and moving
MyISAMdata files is unsupported. Tables moved using this method are not discovered by the server.
Simple backup and restore of individual
MyISAMtables using copied data files is unsupported.
DDL operations take longer due to writing to storage, undo logs, and redo logs instead of
With the removal of
.islfiles in MySQL 8.0, offline relocation of file-per-table tablespaces created outside of the MySQL data directory is not supported.