connect (master,localhost,root,,test,0,mysql-master.sock);
connect (slave,localhost,root,,test,0,mysql-slave.sock);
source include/have_default_master.inc;
system cat /dev/null > var/slave-data/master.info;
system chmod 000 var/slave-data/master.info;
connection slave;
!slave start;
system chmod 600 var/slave-data/master.info;
!slave start;
!change master to master_host='127.0.0.1',master_port=9306,master_user='root'; 
reset slave;
!change master to master_host='127.0.0.1',master_port=9306,master_user='root'; 
connection master;
reset master;
connection slave;
slave start;
connection master;
drop table if exists t1;
create table t1 (s text);
insert into t1 values('Could not break slave'),('Tried hard');
save_master_pos;
connection slave;
sync_with_master;
show slave status;
select * from t1;
connection master;
flush logs;
drop table if exists t2;
create table t2(m int not null primary key);
insert into t2 values (34),(67),(123);
save_master_pos;
flush logs;
show master logs;
#now lets make some duplicate key mess and see if we can recover from it
#first insert a value on the slave
connection slave;
sync_with_master;
insert into t2 values(1234);
#same value on the master
connection master;
save_master_pos;
insert into t2 values(1234);
connection slave;
sync_with_master;
#the slave may have already stopped, so we ignore the error
!slave stop;
#restart slave skipping one event
set sql_slave_skip_counter=1;
slave start;
connection master;
save_master_pos;
#let slave catch up
connection slave;
sync_with_master;
show slave status;
connection master;
purge master logs to 'master-bin.003';
show master logs;
insert into t2 values (65);
save_master_pos;
connection slave;
sync_with_master;
show slave status;
select * from t2;
connection master;
let $1=100;
drop table if exists t3;
create table t3 (n int);
while ($1)
{
 insert into t3 values(4);
 dec $1;
}
show master logs;
save_master_pos;
connection slave;
sync_with_master;
select count(*) from t3 where n = 4;
#clean up
connection master;
drop table if exists t1,t2,t3;
save_master_pos;
connection slave;
sync_with_master;