mysql-test/suite/sys_vars/t/slave_parallel_threads_basic.test


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--source include/not_embedded.inc

SET @save_slave_parallel_threads= @@GLOBAL.slave_parallel_threads;

# Check that we don't spawn worker threads at server startup, when no
# slave is configured (MDEV-5289).
SELECT IF(COUNT(*) < 20, "OK", CONCAT("Found too many system user processes: ", COUNT(*))) FROM information_schema.processlist WHERE user = "system user";

SELECT @@GLOBAL.slave_parallel_threads as 'must be 20 because of .cnf';
--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;
SELECT @@GLOBAL.slave_parallel_threads as 'must be 0 because of default';
SET GLOBAL slave_parallel_threads= 10;
SELECT @@GLOBAL.slave_parallel_threads;
# Check that we don't spawn worker threads when no slave is started.
SELECT IF(COUNT(*) < 10, "OK", CONCAT("Found too many system user processes: ", COUNT(*))) FROM information_schema.processlist WHERE user = "system user";

SET GLOBAL slave_parallel_threads = @save_slave_parallel_threads;