Fix sporadic failures of v_schema_table_lock_waits.test

Author: MarkLeith

mysql-test/suite/sysschema/r/v_schema_table_lock_waits.result

@@ -43,12 +43,18 @@ SELECT * FROM sys.x$schema_table_lock_waits;
 CREATE TABLE test.lock_waits (i INT PRIMARY KEY, j INT) ENGINE = InnoDB;
 LOCK TABLE lock_waits WRITE;
 ALTER TABLE test.lock_waits ADD k VARCHAR(20);
+SELECT SLEEP(1);
+SLEEP(1)
+0
 SELECT object_schema, object_name,
 waiting_account, waiting_lock_type, waiting_query,
 blocking_account, blocking_lock_type, blocking_lock_duration
 FROM sys.schema_table_lock_waits;
 object_schema	object_name	waiting_account	waiting_lock_type	waiting_query	blocking_account	blocking_lock_type	blocking_lock_duration
 test	lock_waits	root@localhost	SHARED_UPGRADABLE	ALTER TABLE test.lock_waits ADD k VARCHAR(20)	root@localhost	SHARED_NO_READ_WRITE	TRANSACTION
+SELECT SLEEP(1);
+SLEEP(1)
+0
 SELECT object_schema, object_name,
 waiting_account, waiting_lock_type, waiting_query,
 blocking_account, blocking_lock_type, blocking_lock_duration

mysql-test/suite/sysschema/t/v_schema_table_lock_waits.test

@@ -32,6 +32,7 @@ connection con2;
 send ALTER TABLE test.lock_waits ADD k VARCHAR(20);
 
 connection default;
+SELECT SLEEP(1);
 SELECT object_schema, object_name,
        waiting_account, waiting_lock_type, waiting_query,
        blocking_account, blocking_lock_type, blocking_lock_duration
@@ -40,7 +41,7 @@ SELECT object_schema, object_name,
 disconnect con1;
 
 connection default;
-
+SELECT SLEEP(1);
 SELECT object_schema, object_name,
        waiting_account, waiting_lock_type, waiting_query,
        blocking_account, blocking_lock_type, blocking_lock_duration