mariadb/mysql-test/suite/rpl/t/rpl_dual_pos_advance.test

# This test checks that in a dual-head setup
# A->B->A, where A has --log-slave-updates (why would it?
# assume that there is a C as slave of A),
# then the Exec_master_log_pos of SHOW SLAVE STATUS does
# not stay too low on B(BUG#13023 due to events ignored because
# of their server id).
# It also will test BUG#13861.

source include/master-slave.inc;
source include/have_innodb.inc;


# set up "dual head"

# Needed for debug info in wait_for_slave_sql_to_stop.
let $master_connection= slave;
connection slave;
reset master;

connection master;
--replace_result $SLAVE_MYPORT SLAVE_PORT
eval change master to master_host="127.0.0.1",master_port=$SLAVE_MYPORT,master_user="root";

start slave;

# now we test it

connection slave;

create table t1 (n int);

save_master_pos;
connection master;
sync_with_master;

#
# BUG#13861 - START SLAVE UNTIL may stop 1 evnt too late if
#             log-slave-updates and circul repl
#
stop slave;

create table t2 (n int); # create one ignored event

save_master_pos;
connection slave;
sync_with_master;

connection slave;

show tables;

save_master_pos;

create table t3 (n int) engine=innodb;
set @a=1;
insert into t3 values(@a);
begin;
insert into t3 values(2);
insert into t3 values(3);
commit;
insert into t3 values(4);


connection master;

# bug is that START SLAVE UNTIL may stop too late, we test that by
# asking it to stop before creation of t3.

start slave until master_log_file="slave-bin.000001",master_log_pos=195;
--source include/wait_for_slave_sql_to_stop.inc

# then BUG#13861 causes t3 to show up below (because stopped too
# late).

show tables;

# ensure that we do not break set @a=1; insert into t3 values(@a);
start slave until master_log_file="slave-bin.000001",master_log_pos=438;
--source include/wait_for_slave_sql_to_stop.inc
select * from t3;

# ensure that we do not break transaction
start slave until master_log_file="slave-bin.000001",master_log_pos=663;
--source include/wait_for_slave_sql_to_stop.inc
select * from t3;

start slave;

# BUG#13023 is that Exec_master_log_pos may stay too low "forever":

connection master;

create table t4 (n int); # create 3 ignored events
create table t5 (n int);
create table t6 (n int);

save_master_pos;
connection slave;
sync_with_master;

connection slave;

save_master_pos;

connection master;

# then BUG#13023 caused hang below ("master" looks behind, while it's
# not in terms of updates done).

sync_with_master;

show tables;

# cleanup

stop slave;
reset slave;
drop table t1,t2,t3,t4,t5,t6;

save_master_pos;
connection slave;
sync_with_master;

# End of 4.1 tests