14.10 InnoDB File-Format Management
InnoDB evolves, data file formats that are not compatible with prior versions of
InnoDB are sometimes required to support new features. To help manage compatibility in upgrade and downgrade situations, and systems that run different versions of MySQL,
InnoDB uses named file formats.
InnoDB currently supports two named file formats, Antelope and Barracuda.
Barracuda is the newest file format. It supports all
InnoDBrow formats including the newer COMPRESSED and DYNAMIC row formats. The features associated with COMPRESSED and DYNAMIC row formats include compressed tables, efficient storage of off-page columns, and index key prefixes up to 3072 bytes (
innodb_large_prefix). See Section 14.11, “InnoDB Row Formats”.
This section discusses enabling
InnoDB file formats for new
InnoDB tables, verifying compatibility of different file formats between MySQL releases, and identifying the file format in use.
InnoDB file format settings do not apply to tables stored in general tablespaces. General tablespaces provide support for all row formats and associated features. For more information, see Section 22.214.171.124, “General Tablespaces”.
The following file format configuration parameters have new default values:
The following file format configuration parameters are deprecated in and may be removed in a future release:
The file format configuration parameters were provided for creating tables compatible with earlier versions of
InnoDB in MySQL 5.1. Now that MySQL 5.1 has reached the end of its product lifecycle, the parameters are no longer required.