connect  pause_purge,localhost,root;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connection default;
CREATE TABLE t (pk int PRIMARY KEY, sk INT UNIQUE) ENGINE=InnoDB;
INSERT INTO t VALUES (10, 100);
connect  con1,localhost,root;
BEGIN;
SELECT * FROM t WHERE sk = 100 FOR UPDATE;
pk	sk
10	100
connect  con2,localhost,root;
SET DEBUG_SYNC="lock_wait_start SIGNAL insert_wait_started";
INSERT INTO t VALUES (5, 100) # trx 1;
connect  con3,localhost,root;
SET TRANSACTION ISOLATION LEVEL REPEATABLE READ;
SET DEBUG_SYNC="now WAIT_FOR insert_wait_started";
SET DEBUG_SYNC="lock_wait_start SIGNAL delete_started_waiting";
DELETE FROM t WHERE sk = 100 # trx 2;
connection con1;
SET DEBUG_SYNC="now WAIT_FOR delete_started_waiting";
DELETE FROM t WHERE sk=100;
COMMIT;
disconnect con1;
connection con2;
disconnect con2;
connection con3;
ERROR 40001: Deadlock found when trying to get lock; try restarting transaction
disconnect con3;
connection default;
SELECT * FROM t;
pk	sk
5	100
disconnect pause_purge;
SET DEBUG_SYNC="RESET";
DROP TABLE t;