--source include/have_debug_sync.inc

CREATE TABLE t(
       id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
       k INT,
       c CHAR(1),
       UNIQUE KEY(k)) ENGINE=InnoDB;

--enable_info

--echo #
--echo # Sequential execution
--echo #

INSERT INTO t(k) VALUES (1), (2), (3) ON DUPLICATE KEY UPDATE c='1';

--echo #
--echo # 1 duplicate
--echo #
INSERT INTO t(k) VALUES (2), (4), (5) ON DUPLICATE KEY UPDATE c='2';
--echo #
--echo # 5 rows, consecutive auto_inc values
--echo #
SELECT * FROM t;

TRUNCATE t;

--echo #
--echo # Parallel execution
--echo #

--connect(con1, localhost, root)
--connect(con2, localhost, root)

--connection con1

--echo #
--echo # Connection 1
--echo #
SET DEBUG_SYNC=IF(@@innodb_autoinc_lock_mode > 0, 'ha_write_row_end WAIT_FOR continue', 'RESET');
--send INSERT INTO t(k) VALUES (1), (2), (3) ON DUPLICATE KEY UPDATE c='1'
--connection con2
--echo #
--echo # Connection 2
--echo #
SET DEBUG_SYNC=IF(@@innodb_autoinc_lock_mode > 0, 'execute_command_after_close_tables SIGNAL continue', 'RESET');
INSERT INTO t(k) VALUES (2), (4), (5) ON DUPLICATE KEY UPDATE c='2';

--connection con1
--echo #
--echo # 2 duplicates
--echo #
--reap
--echo #
--echo # 4 rows, gap in auto_inc values
--echo #
SELECT * FROM t;

--disable_info

DROP TABLE t;