Defines the filename for the writeset cache
See also: wsrep Provider Options for MariaDB Enterprise Server 23.08, in 23.07 ES, in 10.6 ES, in 10.5 ES, in 10.4 ES, in 10.3 ES, in 10.2 ES, in 10.6 CS, in 10.5 CS, in 10.4 CS, in 10.3 CS, and in 10.2 CS
When nodes receive state transfers they cannot process incoming write-sets until they finish updating their state. Under certain methods, the node that sends the state transfer is similarly blocked. To prevent the database from falling further behind, GCache saves the incoming write-sets on memory-mapped files to disk.
gcache.name option specifies the name the node should use for this ring buffer storage file.
Display Current Value
wsrep_provider_options define optional settings the node passes to the wsrep provider.
To display current
SHOW GLOBAL VARIABLES LIKE 'wsrep_provider_options';
The expected output will display the option and the value. Options with no default value, for example SSL options, will not be displayed in the output.
Set in Configuration File
When changing a setting for a wsrep_
Options are set in the
my.cnf configuration file. Use the
; delimiter to set multiple options.
The configuration file must be updated on each node. A restart to each node is needed for changes to take effect.
Use a quoted string that includes every option where you want to override the default value. Options that are not in the list will reset to their default value.
To set the option in the configuration file:
The gcache.name option cannot be set dynamically. It can only be set in the configuration file.
Trying to change a non-dynamic option with
SET results in an error:
ERROR 1210 (HY000): Incorrect arguments to SET