--source include/have_innodb.inc
--source include/have_sequence.inc
--source include/have_binlog_format_mixed.inc
--source include/master-slave.inc

--echo *** Testcase to show how a long-running SELECT can block replication from proceeding
--echo *** past a DDL. Intention to implement a timeout after which such SELECT can be
--echo *** killed.

--connection master
CREATE TABLE t1 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB;
INSERT INTO t1 SELECT seq, 100+seq FROM seq_1_to_20;

--sync_slave_with_master

--source include/stop_slave.inc
SELECT @@GLOBAL.slave_abort_blocking_timeout;
SET @old_abort_timeout= @@slave_abort_blocking_timeout;
SET GLOBAL slave_abort_blocking_timeout= -1;
SELECT @@GLOBAL.slave_abort_blocking_timeout;
SET GLOBAL slave_abort_blocking_timeout= 1.0;
SELECT @@GLOBAL.slave_abort_blocking_timeout;
--connection server_2
# Start a SELECT that will run for long.
send SELECT X.a, SLEEP(IF((X.b MOD 2)=0, 0.4, 0.6)) FROM t1 X CROSS JOIN t1 Y;

--connection slave
# Wait for the SELECT to have started so it will block the coming DDL
# from replicating.
--let $wait_condition= SELECT COUNT(*)=1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE state = 'User sleep'
--source include/wait_condition.inc

--connection master
UPDATE t1 SET b=b+1000 WHERE a=1;
ALTER TABLE t1 ADD INDEX b_idx(b);
UPDATE t1 SET b=b+1000 WHERE a=20;

--save_master_pos
--connection slave
--source include/start_slave.inc
--sync_with_master

--connection server_2
--error ER_QUERY_INTERRUPTED
reap;

--connection slave
query_vertical SHOW CREATE TABLE t1;

# Do it again to test that a timeout of 0 also works to abort user queries.
--source include/stop_slave.inc
SET GLOBAL slave_abort_blocking_timeout= 0;
SELECT @@GLOBAL.slave_abort_blocking_timeout;
--connection server_2
send SELECT X.a, SLEEP(IF((X.b MOD 2)=0, 0.4, 0.6)) FROM t1 X CROSS JOIN t1 Y;

--connection slave
--let $wait_condition= SELECT COUNT(*)=1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE state = 'User sleep'
--source include/wait_condition.inc

--connection master
UPDATE t1 SET b=b+1000 WHERE a=1;
ALTER TABLE t1 DROP INDEX b_idx;
UPDATE t1 SET b=b+1000 WHERE a=20;

--save_master_pos
--connection slave
--source include/start_slave.inc
--sync_with_master

--connection server_2
--error ER_QUERY_INTERRUPTED
reap;

--connection slave
query_vertical SHOW CREATE TABLE t1;


--source include/stop_slave.inc
SET GLOBAL slave_abort_blocking_timeout= @old_abort_timeout;
--source include/start_slave.inc

--connection master
DROP TABLE t1;
--source include/rpl_end.inc