mirror of
https://github.com/MariaDB/server.git
synced 2025-09-06 19:08:06 +03:00
893472d005
The option innodb_rollback_segments was deprecated already in MariaDB Server 10.0. Its misleadingly named replacement innodb_undo_logs is of very limited use. It makes sense to always create and use the maximum number of rollback segments. Let us remove the deprecated parameter innodb_rollback_segments and deprecate&ignore the parameter innodb_undo_logs (to be removed in a later major release). This work involves some cleanup of InnoDB startup. Similar to other write operations, DROP TABLE will no longer be allowed if innodb_force_recovery is set to a value larger than 3.
45 lines
1.6 KiB
Plaintext
45 lines
1.6 KiB
Plaintext
SELECT @@global.innodb_undo_logs;
|
|
@@global.innodb_undo_logs
|
|
128
|
|
SELECT @@session.innodb_undo_logs;
|
|
ERROR HY000: Variable 'innodb_undo_logs' is a GLOBAL variable
|
|
SHOW global variables LIKE 'innodb_undo_logs';
|
|
Variable_name Value
|
|
innodb_undo_logs 128
|
|
SHOW session variables LIKE 'innodb_undo_logs';
|
|
Variable_name Value
|
|
innodb_undo_logs 128
|
|
SELECT * FROM information_schema.global_variables
|
|
WHERE variable_name='innodb_undo_logs';
|
|
VARIABLE_NAME VARIABLE_VALUE
|
|
INNODB_UNDO_LOGS 128
|
|
SELECT * FROM information_schema.session_variables
|
|
WHERE variable_name='innodb_undo_logs';
|
|
VARIABLE_NAME VARIABLE_VALUE
|
|
INNODB_UNDO_LOGS 128
|
|
SET global innodb_undo_logs=100;
|
|
Warnings:
|
|
Warning 138 The parameter innodb_undo_logs is deprecated and has no effect.
|
|
SELECT @@global.innodb_undo_logs;
|
|
@@global.innodb_undo_logs
|
|
128
|
|
SET session innodb_undo_logs=1;
|
|
ERROR HY000: Variable 'innodb_undo_logs' is a GLOBAL variable and should be set with SET GLOBAL
|
|
SET global innodb_undo_logs=1.1;
|
|
ERROR 42000: Incorrect argument type to variable 'innodb_undo_logs'
|
|
SET global innodb_undo_logs=1e1;
|
|
ERROR 42000: Incorrect argument type to variable 'innodb_undo_logs'
|
|
SET global innodb_undo_logs="foo";
|
|
ERROR 42000: Incorrect argument type to variable 'innodb_undo_logs'
|
|
SET global innodb_undo_logs=-7;
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect innodb_undo_logs value: '-7'
|
|
Warning 138 The parameter innodb_undo_logs is deprecated and has no effect.
|
|
SELECT @@global.innodb_undo_logs;
|
|
@@global.innodb_undo_logs
|
|
128
|
|
SELECT * FROM information_schema.global_variables
|
|
WHERE variable_name='innodb_undo_logs';
|
|
VARIABLE_NAME VARIABLE_VALUE
|
|
INNODB_UNDO_LOGS 128
|