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# # 2010-01-27 - Added # --source include/have_innodb.inc SET @start_global_value = @@global.innodb_spin_wait_delay; SELECT @start_global_value; # # exists as global only # --echo Valid values are zero or above select @@global.innodb_spin_wait_delay >=0; select @@global.innodb_spin_wait_delay; --error ER_INCORRECT_GLOBAL_LOCAL_VAR select @@session.innodb_spin_wait_delay; show global variables like 'innodb_spin_wait_delay'; show session variables like 'innodb_spin_wait_delay'; --disable_warnings select * from information_schema.global_variables where variable_name='innodb_spin_wait_delay'; select * from information_schema.session_variables where variable_name='innodb_spin_wait_delay'; --enable_warnings # # show that it's writable # set global innodb_spin_wait_delay=10; select @@global.innodb_spin_wait_delay; --disable_warnings select * from information_schema.global_variables where variable_name='innodb_spin_wait_delay'; select * from information_schema.session_variables where variable_name='innodb_spin_wait_delay'; --enable_warnings --error ER_GLOBAL_VARIABLE set session innodb_spin_wait_delay=1; # # check the default value # set global innodb_spin_wait_delay=DEFAULT; select @@global.innodb_spin_wait_delay; # # valid values # set global innodb_spin_wait_delay=0; select @@global.innodb_spin_wait_delay; set global innodb_spin_wait_delay=65535; select @@global.innodb_spin_wait_delay; set global innodb_spin_wait_delay=4294967295; select @@global.innodb_spin_wait_delay; # # incorrect types # --error ER_WRONG_TYPE_FOR_VAR set global innodb_spin_wait_delay=1.1; --error ER_WRONG_TYPE_FOR_VAR set global innodb_spin_wait_delay=1e1; --error ER_WRONG_TYPE_FOR_VAR set global innodb_spin_wait_delay="foo"; --error ER_WRONG_TYPE_FOR_VAR set global innodb_spin_wait_delay=' '; select @@global.innodb_spin_wait_delay; --error ER_WRONG_TYPE_FOR_VAR set global innodb_spin_wait_delay=" "; select @@global.innodb_spin_wait_delay; set global innodb_spin_wait_delay=-7; select @@global.innodb_spin_wait_delay; set global innodb_spin_wait_delay=-1024; select @@global.innodb_spin_wait_delay; --disable_warnings select * from information_schema.global_variables where variable_name='innodb_spin_wait_delay'; --enable_warnings # # Check for out of bounds # # With a 64 bit mysqld:18446744073709551615,with a 32 bit mysqld: 4294967295 --disable_warnings SET @@global.innodb_spin_wait_delay = 4294967296; --enable_warnings SELECT @@global.innodb_spin_wait_delay IN (4294967296,4294967295); --disable_warnings SET @@global.innodb_spin_wait_delay = 12345678901; --enable_warnings SELECT @@global.innodb_spin_wait_delay IN (12345678901,4294967295); --disable_warnings SET @@global.innodb_spin_wait_delay = 18446744073709551615; --enable_warnings SELECT @@global.innodb_spin_wait_delay IN (18446744073709551615,4294967295); # # cleanup # SET @@global.innodb_spin_wait_delay = @start_global_value; SELECT @@global.innodb_spin_wait_delay;