Format Change for Log Type Tables with Nullable Columns

The format for marks in Log type tables that contain Nullable columns was changed in a backward incompatible way. If you have these tables, you should convert them to the TinyLog type before starting up the new server version. To do this, replace ENGINE = Log with ENGINE = TinyLog in the corresponding .sql file in the metadata directory. If your table does not have Nullable columns or if the type of your table is not Log, then you do not need to do anything.