InnoDB and XtraDB

MariaDB starting with 10.3.7

In MariaDB 10.3.7 and later, the InnoDB implementation has diverged substantially from the InnoDB in MySQL. Therefore, in these versions, the InnoDB version is no longer associated with a MySQL release version.

MariaDB starting with 10.2

In MariaDB 10.2 and later, the default InnoDB implementation is based on InnoDB from MySQL 5.7. See Why MariaDB uses InnoDB instead of XtraDB from MariaDB 10.2 for more information.

MariaDB until 10.1

In MariaDB 10.1 and before, the default InnoDB implementation is based on Percona's XtraDB. XtraDB is a performance enhanced fork of InnoDB. For compatibility reasons, the system variables still retain their original innodb prefixes. If the documentation says that something applies to InnoDB, then it usually also applies to the XtraDB fork, unless explicitly stated otherwise. In these versions, it is still possible to use InnoDB instead of XtraDB. See Using InnoDB instead of XtraDB for more information.

InnoDB Versions

MariaDB starting with 10.3.7

In MariaDB 10.3.7 and later, the InnoDB implementation has diverged substantially from the InnoDB in MySQL. Therefore, in these versions, the InnoDB version is no longer associated with a MySQL release version.

MariaDB starting with 10.2

In MariaDB 10.2 and later, the default InnoDB implementation is based on InnoDB from MySQL 5.7. See Why MariaDB uses InnoDB instead of XtraDB from MariaDB 10.2 for more information.

MariaDB until 10.1

In MariaDB 10.1 and before, the default InnoDB implementation is based on Percona's XtraDB. XtraDB is a performance enhanced fork of InnoDB. For compatibility reasons, the system variables still retain their original innodb prefixes. If the documentation says that something applies to InnoDB, then it usually also applies to the XtraDB fork, unless explicitly stated otherwise. In these versions, it is still possible to use InnoDB instead of XtraDB. See Using InnoDB instead of XtraDB for more information.

MariaDB until 10.0.8

In MariaDB 10.0.8 and before, the default InnoDB implementation is based on InnoDB from MySQL. In these versions, Percona's XtraDB is available to use as a dynamic plugin. To use XtraDB in these versions, the ignore_builtin_innodb system variable needs to be set, and the ha_xtradb plugin needs to be loaded with the plugin_load option. Both can be set in a server option group in an option file prior to starting up the server. See Installing Plugins for more information. For example:

[mariadb]

...

ignore_builtin_innodb

plugin_load=ha_xtradb

About XtraDB

Contents

Percona XtraDB versions in MariaDB

MariaDB 10.1

MariaDB 10.0

MariaDB 5.5

MariaDB 5.2 and MariaDB 5.3

MariaDB 5.1

Notes

See Also

Percona XtraDB was an enhanced version of the InnoDB storage engine used in MariaDB before MariaDB 10.2, designed to better scale on modern hardware, and it includes a variety of other features useful in high performance environments.

It is fully backwards compatible, and it identifies itself to MariaDB as "ENGINE=InnoDB" (just like InnoDB), and so can be used as a drop-in replacement for standard InnoDB.

Percona XtraDB includes all of InnoDB's robust, reliable ACID-compliant design and advanced MVCC architecture, and builds on that solid foundation with more features, more tunability, more metrics, and more scalability. In particular, it is designed to scale better on many cores, to use memory more efficiently, and to be more convenient and useful. The new features are especially designed to alleviate some of InnoDB's limitations. We choose features and fixes based on customer requests and on our best judgment of real-world needs as a high-performance consulting company.

XtraDB was also available in MariaDB for Windows.

Percona XtraDB versions in MariaDB

Link to PDF : Storage Engines Supported