DROP TABLE IF EXISTS t1;
SET @low_prio_updates = @@global.low_priority_updates;
SET @concur_insert = @@global.concurrent_insert;
SET GLOBAL concurrent_insert = NEVER;
connect  con0,localhost,root,,;
SET lock_wait_timeout = 4;
connect  con1,localhost,root,,;
SET lock_wait_timeout = 4;
connect  con2,localhost,root,,;
SET lock_wait_timeout = 4;
CREATE TABLE t1 (a <INT_COLUMN>, b <CHAR_COLUMN>) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
INSERT INTO t1 (a,b) VALUES (1,'f'),(2,'b');
SET GLOBAL LOW_PRIORITY_UPDATES = 1;
connection con1;
SELECT SLEEP(1) FROM t1;
connection con0;
INSERT INTO t1 (a,b) VALUES (3,'z');
connection con2;
# Should return only 2 rows
SELECT SLEEP(1) FROM t1;
SLEEP(1)
0
0
connection con1;
SLEEP(1)
0
0
connection con0;
SELECT a,b FROM t1;
a	b
1	f
2	b
3	z
DROP TABLE t1;
CREATE TABLE t1 (a <INT_COLUMN>, b <CHAR_COLUMN>) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
INSERT INTO t1 (a,b) VALUES (1,'f'),(2,'b');
connection con1;
SELECT SLEEP(1) FROM t1;
connection con0;
INSERT HIGH_PRIORITY INTO t1 (a,b) VALUES (3,'z');
connection con2;
# Should return 3 rows
SELECT SLEEP(1) FROM t1;
SLEEP(1)
0
0
0
connection con1;
SLEEP(1)
0
0
connection con0;
SELECT a,b FROM t1;
a	b
1	f
2	b
3	z
disconnect con1;
disconnect con2;
disconnect con0;
connection default;
SET GLOBAL low_priority_updates = @low_prio_updates;
SET GLOBAL concurrent_insert = @concur_insert;
DROP TABLE t1;