set session long_query_time=10;
select get_lock('bug27638', 1);
get_lock('bug27638', 1)
1
set session long_query_time=1;
truncate table mysql.slow_log;
select get_lock('bug27638', 2);
get_lock('bug27638', 2)
0
select if (query_time between '00:00:01' and '00:00:10', 'OK', 'WRONG') as qt, sql_text from mysql.slow_log;
qt	sql_text
OK	select get_lock('bug27638', 2)
truncate table mysql.slow_log;
select get_lock('bug27638', 60);
get_lock('bug27638', 60)
0
select if (query_time between '00:00:59' and '00:01:10', 'OK', 'WRONG') as qt, sql_text from mysql.slow_log;
qt	sql_text
OK	select get_lock('bug27638', 60)
truncate table mysql.slow_log;
select get_lock('bug27638', 101);
get_lock('bug27638', 101)
0
select if (query_time between '00:01:40' and '00:01:50', 'OK', 'WRONG') as qt, sql_text from mysql.slow_log;
qt	sql_text
OK	select get_lock('bug27638', 101)
select release_lock('bug27638');
release_lock('bug27638')
1