Upgrading from MariaDB 10.1 to MariaDB 10.2 - Source

Revision: 120105
User: Ian Gilfillan
Date: 2021-03-07 14:37

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=== How to Upgrade

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For Windows, see [[upgrading-mariadb-on-windows|Upgrading MariaDB on Windows]] instead.
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For MariaDB Galera Cluster, see [[upgrading-from-mariadb-101-to-mariadb-102-with-galera-cluster|Upgrading from MariaDB 10.1 to MariaDB 10.2 with Galera Cluster]] instead.
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The suggested upgrade procedure is:

# Modify the repository configuration, so the system's package manager installs MariaDB 10.2. For example,
** On Debian, Ubuntu, and other similar Linux distributions, see [[installing-mariadb-deb-files/#updating-the-mariadb-apt-repository-to-a-new-major-release|Updating the MariaDB APT repository to a New Major Release]] for more information.
** On RHEL, CentOS, Fedora, and other similar Linux distributions, see [[yum/#updating-the-mariadb-yum-repository-to-a-new-major-release|Updating the MariaDB YUM repository to a New Major Release]] for more information.
** On SLES, OpenSUSE, and other similar Linux distributions, see [[installing-mariadb-with-zypper/#updating-the-mariadb-zypp-repository-to-a-new-major-release|Updating the MariaDB ZYpp repository to a New Major Release]] for more information.
# Set ##[[xtradbinnodb-server-system-variables#innodb_fast_shutdown|innodb_fast_shutdown]]## to ##0##. It can be changed dynamically with ##[[set/#global-session|SET GLOBAL]]##. For example: \\
<<code>>SET GLOBAL innodb_fast_shutdown=0;<</code>>
** This step is not necessary when upgrading to MariaDB 10.2.5 or later. Omitting it can make the upgrade process far faster. See MDEV-12289 for more information.
# [[starting-and-stopping-mariadb-automatically|Stop MariaDB]].
# Uninstall the old version of MariaDB.
** On Debian, Ubuntu, and other similar Linux distributions, execute the following: \\
<<code>>sudo apt-get remove mariadb-server<</code>>
** On RHEL, CentOS, Fedora, and other similar Linux distributions, execute the following: \\
<<code>>sudo yum remove MariaDB-server<</code>>
** On SLES, OpenSUSE, and other similar Linux distributions, execute the following: \\
<<code>>sudo zypper remove MariaDB-server<</code>>
# Install the new version of MariaDB.
** On Debian, Ubuntu, and other similar Linux distributions, see [[installing-mariadb-deb-files/#installing-mariadb-packages-with-apt|Installing MariaDB Packages with APT]] for more information.
** On RHEL, CentOS, Fedora, and other similar Linux distributions, see [[yum/#installing-mariadb-packages-with-yum|Installing MariaDB Packages with YUM]] for more information.
** On SLES, OpenSUSE, and other similar Linux distributions, see [[installing-mariadb-with-zypper/#installing-mariadb-packages-with-zypp|Installing MariaDB Packages with ZYpp]] for more information.
# Make any desired changes to configuration options in [[configuring-mariadb-with-option-files|option files]], such as ##my.cnf##. This includes removing any options that are no longer supported.
# [[starting-and-stopping-mariadb-automatically|Start MariaDB]].
# Run ##[[mysql_upgrade]]##.
** ##mysql_upgrade## does two things:
### Ensures that the system tables in the ##[[the-mysql-database-tables|mysq]]l## database are fully compatible with the new version.
### Does a very quick check of all tables and marks them as compatible with the new version of MariaDB .

=== Incompatible Changes Between 10.1 and 10.2

On most servers upgrading from 10.1 should be painless. However, there are some things that have changed which could affect an upgrade:

==== InnoDB Instead of XtraDB
MariaDB 10.2 uses [[innodb|InnoDB]] as the default storage engine, rather than XtraDB, used in MariaDB 10.1 and before. See [[why-does-mariadb-102-use-innodb-instead-of-xtradb|Why does MariaDB 10.2 use InnoDB instead of XtraDB?]] In most cases this should have minimal effect as the latest InnoDB has incorporated most of the improvements made in earlier versions of XtraDB. Note that certain [[xtradbinnodb-server-system-variables|XtraDB system variables]] are now ignored (although they still exist so as to permit easy upgrading).

==== Options That Have Been Removed or Renamed

The following options should be removed or renamed if you use them in your [[configuring-mariadb-with-option-files|option files]]:

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|= Option |= Reason
| aria_recover | Renamed to [[aria-system-variables#aria_recover_options|aria_recover_options]] to match  [[myisam-system-variables#myisam_recover_options|myisam_recover_options]].
| [[xtradbinnodb-server-system-variables#innodb_additional_mem_pool_size|innodb_additional_mem_pool_size]] | Deprecated in MariaDB 10.0.
| [[xtradbinnodb-server-system-variables#innodb_api_bk_commit_interval|innodb_api_bk_commit_interval]] | Memcache never implemented in MariaDB.
| [[xtradbinnodb-server-system-variables#innodb_api_disable_rowlock|innodb_api_disable_rowlock]] | Memcache never implemented in MariaDB.
| [[xtradbinnodb-server-system-variables#innodb_api_enable_binlog|innodb_api_enable_binlog]] | Memcache never implemented in MariaDB.
| [[xtradbinnodb-server-system-variables#innodb_api_enable_mdl|innodb_api_enable_mdl]] | Memcache never implemented in MariaDB.
| [[xtradbinnodb-server-system-variables#innodb_api_trx_level||innodb_api_trx_level]] | Memcache never implemented in MariaDB.
| [[xtradbinnodb-server-system-variables#innodb_use_sys_malloc|innodb_use_sys_malloc]] | Deprecated in MariaDB 10.0.
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==== Reserved Words
New [[reserved-words|reserved words]]: OVER, RECURSIVE and ROWS. These can no longer be used as [[identifier-names|identifiers]] without being quoted.

==== TokuDB
[[tokudb|TokuDB]] has been split into a separate package, mariadb-plugin-tokudb.

==== Replication
[[standard-replication|Replication]] from legacy MySQL servers may require setting [[replication-and-binary-log-server-system-variables/#binlog_checksum|binlog_checksum]] to NONE.

==== SQL Mode
[[sql_mode|SQL_MODE]] has been changed; in particular, NOT NULL fields with no default will no longer fall back to a dummy value for inserts which do not specify a value for that field.

==== Auto_increment
[[auto_increment|Auto_increment]] columns are no longer permitted in [[constraint|CHECK constraints]], [[create-table/#default|DEFAULT value expressions]] and [[virtual-computed-columns|virtual columns]]. They were permitted in earlier versions, but did not work correctly.

==== TLS
Starting with MariaDB 10.2, when the user specifies the ##--ssl## option with a [[clients-utilities|client or utility]], the [[clients-utilities|client or utility]] will not [[secure-connections-overview/#server-certificate-verification|verify the server certificate]] by default. In order to verify the server certificate, the user must specify the ##--ssl-verify-server-cert## option to the [[clients-utilities|client or utility]]. For more information, see the [[mysql-command-line-client/#options|list of options]] for the ##[[mysql-command-line-client|mysql]]## client.

=== Major New Features To Consider

You might consider using the following major new features in MariaDB 10.2:
* [[window-functions|Window Functions]]
* [[mysqlbinlog]] now supports continuous binary log backups
* [[recursive-common-table-expressions-overview|Recursive Common Table Expressions]]
* [[json-functions|JSON functions]]
* See also [[system-variables-added-in-mariadb-102/|System Variables Added in MariaDB 10.2]].

=== See Also
* [[what-is-mariadb-102|The features in MariaDB 10.2]]
* [[upgrading-from-mariadb-101-to-mariadb-102-with-galera-cluster|Upgrading from MariaDB 10.1 to MariaDB 10.2 with Galera Cluster]]
* [[upgrading-from-mariadb-100-to-mariadb-101|Upgrading from MariaDB 10.0 to MariaDB 10.1]]
* [[upgrading-from-mariadb-55-to-mariadb-100|Upgrading from MariaDB 5.5 to MariaDB 10.0]]

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Upgrading from MariaDB 10.1 to MariaDB 10.2 - Source

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