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#
# innodb_instrument_semaphores
#
# save the initial value
SET @innodb_instrument_semaphores_global_saved = @@global.innodb_instrument_semaphores;
# default
SELECT @@global.innodb_instrument_semaphores;
@@global.innodb_instrument_semaphores
0
# scope
SELECT @@session.innodb_instrument_semaphores;
ERROR HY000: Variable 'innodb_instrument_semaphores' is a GLOBAL variable
SET @@global.innodb_instrument_semaphores=OFF;
Warnings:
Warning 131 Using innodb_instrument_semaphores is deprecated and the parameter will be removed in MariaDB 10.3.
SELECT @@global.innodb_instrument_semaphores;
@@global.innodb_instrument_semaphores
0
SET @@global.innodb_instrument_semaphores=ON;
Warnings:
Warning 131 Using innodb_instrument_semaphores is deprecated and the parameter will be removed in MariaDB 10.3.
SELECT @@global.innodb_instrument_semaphores;
@@global.innodb_instrument_semaphores
1
# valid values
SET @@global.innodb_instrument_semaphores='OFF';
Warnings:
Warning 131 Using innodb_instrument_semaphores is deprecated and the parameter will be removed in MariaDB 10.3.
SELECT @@global.innodb_instrument_semaphores;
@@global.innodb_instrument_semaphores
0
SET @@global.innodb_instrument_semaphores=ON;
Warnings:
Warning 131 Using innodb_instrument_semaphores is deprecated and the parameter will be removed in MariaDB 10.3.
SELECT @@global.innodb_instrument_semaphores;
@@global.innodb_instrument_semaphores
1
SET @@global.innodb_instrument_semaphores=default;
Warnings:
Warning 131 Using innodb_instrument_semaphores is deprecated and the parameter will be removed in MariaDB 10.3.
SELECT @@global.innodb_instrument_semaphores;
@@global.innodb_instrument_semaphores
0
# invalid values
SET @@global.innodb_instrument_semaphores=NULL;
ERROR 42000: Variable 'innodb_instrument_semaphores' can't be set to the value of 'NULL'
SET @@global.innodb_instrument_semaphores='junk';
ERROR 42000: Variable 'innodb_instrument_semaphores' can't be set to the value of 'junk'
# restore the initial value
SET @@global.innodb_instrument_semaphores = @innodb_instrument_semaphores_global_saved;
Warnings:
Warning 131 Using innodb_instrument_semaphores is deprecated and the parameter will be removed in MariaDB 10.3.
# End of test
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