--source include/have_innodb.inc
--let $rpl_topology=1->2
--source include/rpl_init.inc

# Test various aspects of parallel replication.

--connection server_2
SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads;
--source include/stop_slave.inc
SET GLOBAL slave_parallel_threads=10;
SET @old_max_relay= @@GLOBAL.max_relay_log_size;
SET GLOBAL max_relay_log_size = 4096;
CHANGE MASTER TO master_use_gtid=slave_pos;
--source include/start_slave.inc

--connection server_1
ALTER TABLE mysql.gtid_slave_pos ENGINE=InnoDB;
CREATE TABLE t1 (a int PRIMARY KEY, b VARCHAR(100)) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1, "a");
--save_master_pos

--connection server_2
--sync_with_master

--echo *** Create a long transaction that will span a relay log file. ***
--connection server_1

# Add some transactions in separate domains, that will cause the need to
# have a multi-valued restart position in the relay log for the SQL thread.
SET @old_domain= @@gtid_domain_id;
SET gtid_domain_id=10;
INSERT INTO t1 VALUES (10000, "domain 10");
SET gtid_domain_id=20;
INSERT INTO t1 VALUES (20000, "domain 20");
SET gtid_domain_id=@old_domain;

BEGIN;
--echo [lots of inserts omitted]
--disable_query_log
--let $count = 500
while ($count) {
  eval INSERT INTO t1 VALUES (1000+$count, REPEAT("hulubulu??!?", 8));
  dec $count;
}
--enable_query_log
COMMIT;

--save_master_pos

--connection server_2
--sync_with_master

--connection server_1
# Now do another one, to make the inuse_relaylog proceed to somewhere inside
# the first large transaction.

BEGIN;
--echo [lots of inserts omitted]
--disable_query_log
--let $count = 500
while ($count) {
  eval INSERT INTO t1 VALUES (2000+$count, REPEAT("hulubulu??!?", 8));
  dec $count;
}
--enable_query_log
COMMIT;

--save_master_pos

--connection server_2
--sync_with_master


# Stop and restart the SQL thread only.
# The bug was that the SQL thread would restart at the start
# of a relay log file, which could be in the middle of an event group.
# This way, part of that event group could be wrongly re-applied.

--source include/stop_slave_sql.inc
START SLAVE SQL_THREAD;
--source include/wait_for_slave_to_start.inc


--connection server_1
INSERT INTO t1 VALUES (100000, "More stuffs.");
INSERT INTO t1 VALUES (100001, "And even more");
--save_master_pos

--connection server_2
--sync_with_master
SELECT * FROM t1 WHERE a >= 100000 ORDER BY a;


# Clean up.
--connection server_2
--source include/stop_slave.inc
SET GLOBAL slave_parallel_threads=@old_parallel_threads;
SET GLOBAL max_relay_log_size= @old_max_relay;
--source include/start_slave.inc

--connection server_1
ALTER TABLE mysql.gtid_slave_pos ENGINE=Aria;
DROP TABLE t1;

--source include/rpl_end.inc