# 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";

source include/start_slave.inc;

# now we test it

connection slave;

create table t1 (n int);
let $master_log_file= query_get_value(SHOW MASTER STATUS, File, 1);
let $master_log_pos_1= query_get_value(SHOW MASTER STATUS, Position, 1);
let $master_log_pos_1= `SELECT $master_log_pos_1 + 3`;

sync_slave_with_master master;

#
# BUG#13861 - START SLAVE UNTIL may stop 1 evnt too late if
#             log-slave-updates and circul repl
#
source include/stop_slave.inc;

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

sync_slave_with_master;

show tables;

create table t3 (n int) engine=innodb;
let $master_log_pos_2= query_get_value(SHOW MASTER STATUS, Position, 1);
let $master_log_pos_2= `SELECT $master_log_pos_2 + 5`;
set @a=1;
insert into t3 values(@a);
let $master_log_pos_3= query_get_value(SHOW MASTER STATUS, Position, 1);
let $master_log_pos_3= `SELECT $master_log_pos_3 + 5`;
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.

--replace_result $master_log_file MASTER_LOG_FILE $master_log_pos_1 MASTER_LOG_POS
eval start slave until master_log_file="$master_log_file",master_log_pos=$master_log_pos_1;
--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);
--replace_result $master_log_file MASTER_LOG_FILE $master_log_pos_2 MASTER_LOG_POS
eval start slave until master_log_file="$master_log_file",master_log_pos=$master_log_pos_2;
--source include/wait_for_slave_sql_to_stop.inc
select * from t3;

# ensure that we do not break transaction
--replace_result $master_log_file MASTER_LOG_FILE $master_log_pos_3 MASTER_LOG_POS
eval start slave until master_log_file="$master_log_file",master_log_pos=$master_log_pos_3;
--source include/wait_for_slave_sql_to_stop.inc
select * from t3;

source include/start_slave.inc;

# 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);

sync_slave_with_master;
sync_slave_with_master master;

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

show tables;

# cleanup

source include/stop_slave.inc;
reset slave;
drop table t1,t2,t3,t4,t5,t6;

sync_slave_with_master;

# End of 4.1 tests
