repl.commit_order
This page is part of MariaDB's Documentation.
The parent of this page is: wsrep Provider Options for MariaDB Enterprise Server
Topics on this page:
Overview
Specifies whether to allow Out-Of-Order committing (improves parallel applying performance)
The wsrep_provider_options
system variable applies to MariaDB Enterprise Cluster, powered by Galera and to Galera Cluster available with MariaDB Community Server. This page relates specifically to the repl.commit_wsrep_provider_options
.
See also: wsrep Provider Options for MariaDB Enterprise Server 10.6, 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
DETAILS
Possible settings:
0
orBYPASS
All commit order monitoring is switched off (useful for measuring performance penalty).1
orOOOC
Allows out of order committing for all transactions.2
orLOCAL_OOOC
Allows out of order committing only for local transactions.3
orNO_OOOC
No out of order committing is allowed (strict total order committing).
Attribute | Value |
---|---|
Option Name | repl.commit_order |
Default Value | 3 |
Dynamic | NO |
Debug |
|
EXAMPLES
Display Current Value
wsrep_provider_options
define optional settings the node passes to the wsrep provider.
To display current wsrep_provider_options
values:
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:
wsrep_provider_options='repl.commit_order=1;gcache.debug=YES;gcs.fc_limit=NO;socket.send_buf_size=NO;evs.keepalive_period=PT3S'
Set Dynamically
The repl.commit_order 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
CHANGE HISTORY
Release Series | History |
---|---|
10.6 Enterprise |
|
10.6 Community |
|
10.5 Enterprise |
|
10.5 Community |
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10.4 Enterprise |
|
10.4 Community |
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10.3 Enterprise |
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10.3 Community |
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10.2 Enterprise |
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10.2 Community |
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