--source include/not_embedded.inc

SET @save_slave_parallel_threads= @@GLOBAL.slave_parallel_threads;

SELECT @@GLOBAL.slave_parallel_threads as 'must be zero because of default';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@SESSION.slave_parallel_threads  as 'no session var';

SET GLOBAL slave_parallel_threads= 0;
SET GLOBAL slave_parallel_threads= DEFAULT;
SET GLOBAL slave_parallel_threads= 10;
SELECT @@GLOBAL.slave_parallel_threads;

SET GLOBAL slave_parallel_threads = @save_slave_parallel_threads;