SELECT lock_mode, lock_type, table_schema, table_name FROM information_schema.metadata_lock_info;
SELECT GET_LOCK('LOCK1',0);
SELECT lock_mode, lock_type, table_schema, table_name FROM information_schema.metadata_lock_info;
SELECT RELEASE_LOCK('LOCK1');
SELECT lock_mode, lock_type, table_schema, table_name FROM information_schema.metadata_lock_info;
