# We want a page split in this test case, to make it easy, we specify the
# page size as 16K only. This deadlock issue is not related to page size.
--source include/have_debug_sync.inc

--source include/count_sessions.inc

# This test case requires the table and the DDTableBuffer in the same
# tablespace. However, it could become invalid after we move DDTableBuffer
# to a separate tablespace.
CREATE TABLE t1 (
a INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
b varchar(500),
c varchar(500),
d varchar(500),
e varchar(500)) ENGINE = InnoDB TABLESPACE = innodb_system;

CREATE TABLE t2 (a INT NOT NULL AUTO_INCREMENT PRIMARY KEY) ENGINE = InnoDB;

# We need so many(7) and so long rows to fill up the page quickly,
# so that the next insert would trigger a page split
INSERT INTO t1(b, c, d, e) VALUES(repeat('0a', 250), repeat('1a', 250), repeat('2a', 250), repeat('3a', 250));
INSERT INTO t1(b, c, d, e) VALUES(repeat('0b', 250), repeat('1b', 250), repeat('2b', 250), repeat('3b', 250));
INSERT INTO t1(b, c, d, e) VALUES(repeat('0c', 250), repeat('1c', 250), repeat('2c', 250), repeat('3c', 250));
INSERT INTO t1(b, c, d, e) VALUES(repeat('0d', 250), repeat('1d', 250), repeat('2d', 250), repeat('3d', 250));
INSERT INTO t1(b, c, d, e) VALUES(repeat('0e', 250), repeat('1e', 250), repeat('2e', 250), repeat('3e', 250));
INSERT INTO t1(b, c, d, e) VALUES(repeat('0f', 250), repeat('1f', 250), repeat('2f', 250), repeat('3f', 250));
INSERT INTO t1(b, c, d, e) VALUES(repeat('0g', 250), repeat('1g', 250), repeat('2g', 250), repeat('3g', 250));

INSERT INTO t2 VALUES(0), (0), (0);

--echo # Invoke checkpoint to persist metadata of t2 to DDTableBuffer
SET @start_global_value = @@global.innodb_log_checkpoint_now;
set global innodb_log_checkpoint_now=ON;
SET @@global.innodb_log_checkpoint_now = @start_global_value;

connect (con1,localhost,root,,);
connect (con2,localhost,root,,);
connection con1;

SET DEBUG_SYNC='delete_metadata_before SIGNAL delete WAIT_FOR insert';
--send
ALTER TABLE t2 ADD COLUMN b INT, ALGORITHM=INPLACE;

connection default;
SET DEBUG_SYNC='now WAIT_FOR delete';
--send
INSERT INTO t1(b, c, d, e) VALUES(repeat('0a', 250), repeat('1a', 250), repeat('2a', 250), repeat('3a', 250));

connection con2;
# It would be better to have 2 DEBUG_SYNC in the code and the test file to
# reproduce the deadlock. However, once we fix the deadlock, it would never
# get the the DEBUG_SYNC in INSERT path because the mutex is now acquired
# before the DEBUG_SYNC. So we sleep here and this would make sure the test
# can pass with the fix.
sleep 2;
SET DEBUG_SYNC='now SIGNAL insert';
disconnect con2;

connection con1;
reap;
disconnect con1;
connection default;
reap;
SET DEBUG_SYNC='RESET';

SELECT count(*) FROM t1;
SELECT count(*) FROM t2;
SHOW CREATE TABLE t2;
DROP TABLE t1, t2;

--source include/wait_until_count_sessions.inc