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# # 2010-01-27 - Added # --source include/have_innodb.inc SET @start_global_value = @@global.innodb_thread_sleep_delay; SELECT @start_global_value; # # exists as global only # --echo Valid values are zero or above select @@global.innodb_thread_sleep_delay >=0; select @@global.innodb_thread_sleep_delay; --error ER_INCORRECT_GLOBAL_LOCAL_VAR select @@session.innodb_thread_sleep_delay; show global variables like 'innodb_thread_sleep_delay'; show session variables like 'innodb_thread_sleep_delay'; --disable_warnings select * from information_schema.global_variables where variable_name='innodb_thread_sleep_delay'; select * from information_schema.session_variables where variable_name='innodb_thread_sleep_delay'; --enable_warnings # # show that it's writable # set global innodb_thread_sleep_delay=10; select @@global.innodb_thread_sleep_delay; --disable_warnings select * from information_schema.global_variables where variable_name='innodb_thread_sleep_delay'; select * from information_schema.session_variables where variable_name='innodb_thread_sleep_delay'; --enable_warnings --error ER_GLOBAL_VARIABLE set session innodb_thread_sleep_delay=1; # # show the default value # set global innodb_thread_sleep_delay=DEFAULT; select @@global.innodb_thread_sleep_delay; # # incorrect types # --error ER_WRONG_TYPE_FOR_VAR set global innodb_thread_sleep_delay=1.1; --error ER_WRONG_TYPE_FOR_VAR set global innodb_thread_sleep_delay=1e1; --error ER_WRONG_TYPE_FOR_VAR set global innodb_thread_sleep_delay="foo"; --error ER_WRONG_TYPE_FOR_VAR set global innodb_thread_sleep_delay=18446744073709551616; set global innodb_thread_sleep_delay=-7; select @@global.innodb_thread_sleep_delay; --disable_warnings select * from information_schema.global_variables where variable_name='innodb_thread_sleep_delay'; --enable_warnings # # correct/overflowed values # set global innodb_thread_sleep_delay=0; select @@global.innodb_thread_sleep_delay; set global innodb_thread_sleep_delay=1000; select @@global.innodb_thread_sleep_delay; set global innodb_thread_sleep_delay=1000000; select @@global.innodb_thread_sleep_delay; set global innodb_thread_sleep_delay=1000001; select @@global.innodb_thread_sleep_delay; set global innodb_thread_sleep_delay=4294967295; select @@global.innodb_thread_sleep_delay; set global innodb_thread_sleep_delay=555; select @@global.innodb_thread_sleep_delay; # # cleanup # SET @@global.innodb_thread_sleep_delay = @start_global_value; SELECT @@global.innodb_thread_sleep_delay;