include/master-slave.inc
Warnings:
Note	####	Sending passwords in plain text without SSL/TLS is extremely insecure.
Note	####	Storing MySQL user name or password information in the master info repository is not secure and is therefore not recommended. Please consider using the USER and PASSWORD connection options for START SLAVE; see the 'START SLAVE Syntax' in the MySQL Manual for more information.
[connection master]
drop table if exists t1;
create procedure save_read_stats()
begin
select rows_requested into @rq from information_schema.table_statistics
where table_schema=database() and table_name='t1';
select variable_value into @rr from information_schema.global_status
where variable_name='xengine_rows_read';
select variable_value into @ru from information_schema.global_status
where variable_name='xengine_rows_updated';
select variable_value into @rd from information_schema.global_status
where variable_name='xengine_rows_deleted';
end//
create procedure get_read_stats()
begin
select rows_requested - @rq as rows_requested from
information_schema.table_statistics
where table_schema=database() and table_name='t1';
select variable_value - @rr as rows_read from
information_schema.global_status
where variable_name='xengine_rows_read';
select variable_value - @ru as rows_updated from
information_schema.global_status
where variable_name='xengine_rows_updated';
select variable_value - @rd as rows_deleted from
information_schema.global_status
where variable_name='xengine_rows_deleted';
end//
create table t1 (id int primary key, value int);
insert into t1 values (1,1), (2,2), (3,3), (4,4);
include/sync_slave_sql_with_master.inc

# regular update/delete. With rocks_read_free_rpl_tables=.*, xengine_rows_read does not increase on slaves

call save_read_stats();
update t1 set value=value+1 where id=1;
delete from t1 where id=4;
select * from t1;
id	value
1	2
2	2
3	3
include/sync_slave_sql_with_master.inc
call get_read_stats();
rows_requested
0
rows_read
0
rows_updated
1
rows_deleted
1
select * from t1;
id	value
1	2
2	2
3	3

# "rocks_read_free_rpl_tables=.*" makes "row not found error" not happen anymore

include/stop_slave.inc
delete from t1 where id in (2, 3);
include/start_slave.inc
call save_read_stats();
update t1 set value=value+1 where id=3;
delete from t1 where id=2;
select * from t1;
id	value
1	2
3	4
include/sync_slave_sql_with_master.inc
call get_read_stats();
rows_requested
0
rows_read
0
rows_updated
1
rows_deleted
1
select * from t1;
id	value
1	2
3	4

## tables without primary key -- read free replication should be disabled


#no index

drop table t1;
create table t1 (c1 int, c2 int);
insert into t1 values (1,1), (2,2),(3,3),(4,4),(5,5);
include/sync_slave_sql_with_master.inc
call save_read_stats();
update t1 set c2=100 where c1=3;
delete from t1 where c1 <= 2;
include/sync_slave_sql_with_master.inc
call get_read_stats();
rows_requested
5
rows_read
5
rows_updated
1
rows_deleted
2
select * from t1;
c1	c2
3	100
4	4
5	5

#secondary index only

drop table t1;
create table t1 (c1 int, c2 int, index i(c1));
insert into t1 values (1,1), (2,2),(3,3),(4,4),(5,5);
include/sync_slave_sql_with_master.inc
call save_read_stats();
update t1 set c2=100 where c1=3;
delete from t1 where c1 <= 2;
include/sync_slave_sql_with_master.inc
call get_read_stats();
rows_requested
3
rows_read
3
rows_updated
1
rows_deleted
2
select * from t1;
c1	c2
3	100
4	4
5	5

## large row operations -- primary key modification, secondary key modification

drop table t1;
create table t1 (id1 bigint, id2 bigint, c1 bigint, c2 bigint, c3 bigint, c4 bigint, c5 bigint, c6 bigint, c7 bigint, primary key (id1, id2), index i(c1, c2));
include/sync_slave_sql_with_master.inc
call save_read_stats();

#updating all seconary keys by 1

include/sync_slave_sql_with_master.inc
call get_read_stats();
rows_requested
0
rows_read
0
rows_updated
10000
rows_deleted
0
include/diff_tables.inc [master:t1, slave:t1]

#updating all primary keys by 2

call save_read_stats();
include/sync_slave_sql_with_master.inc
call get_read_stats();
rows_requested
0
rows_read
0
rows_updated
10000
rows_deleted
0
include/diff_tables.inc [master:t1, slave:t1]

#updating secondary keys after truncating t1 on slave

truncate table t1;
call save_read_stats();
update t1 set c2=c2+10;
include/sync_slave_sql_with_master.inc
call get_read_stats();
rows_requested
0
rows_read
0
rows_updated
10000
rows_deleted
0
include/diff_tables.inc [master:t1, slave:t1]

#updating primary keys after truncating t1 on slave

truncate table t1;
call save_read_stats();
update t1 set id2=id2+10;
include/sync_slave_sql_with_master.inc
call get_read_stats();
rows_requested
0
rows_read
0
rows_updated
10000
rows_deleted
0
include/diff_tables.inc [master:t1, slave:t1]

#deleting half rows

call save_read_stats();
delete from t1 where id1 <= 5000;
include/sync_slave_sql_with_master.inc
call get_read_stats();
rows_requested
0
rows_read
0
rows_updated
0
rows_deleted
5000
include/diff_tables.inc [master:t1, slave:t1]
[on master]
create table t2 (id int primary key, i1 int, i2 int, value int, index(i1), index(i2));
create table u2 (id int primary key, i1 int, i2 int, value int, index(i1), index(i2));
insert into t2 values (1,1,1,1),(2,2,2,2),(3,3,3,3);
insert into u2 values (1,1,1,1),(2,2,2,2),(3,3,3,3);
include/sync_slave_sql_with_master.inc
[on slave]
delete from t2 where id <= 2;
delete from u2 where id <= 2;
[on master]
update t2 set i2=100, value=100 where id=1;
update u2 set i2=100, value=100 where id=1;
[on slave]
call mtr.add_suppression("Slave SQL.*Could not execute Update_rows event on table test.u2.*Error_code.*");
call mtr.add_suppression("Slave: Can't find record in 'u2'.*");
include/wait_for_slave_sql_error.inc [errno=1032]
select count(*) from t2 force index(primary);
count(*)
2
select count(*) from t2 force index(i1);
count(*)
1
select count(*) from t2 force index(i2);
count(*)
2
select * from t2 where id=1;
id	i1	i2	value
1	1	100	100
select i1 from t2 where i1=1;
i1
select i2 from t2 where i2=100;
i2
100
select count(*) from u2 force index(primary);
count(*)
1
select count(*) from u2 force index(i1);
count(*)
1
select count(*) from u2 force index(i2);
count(*)
1
select * from u2 where id=1;
id	i1	i2	value
select i1 from u2 where i1=1;
i1
select i2 from u2 where i2=100;
i2
include/wait_for_slave_sql_to_start.inc

# some tables with read-free replication on and some with it off
# secondary keys have extra rows

[on master]
create table t3 (id int primary key, i1 int, i2 int, value int, index(i1), index(i2));
create table u3 (id int primary key, i1 int, i2 int, value int, index(i1), index(i2));
insert into t3 values (1,1,1,1),(2,2,2,2),(3,3,3,3);
insert into u3 values (1,1,1,1),(2,2,2,2),(3,3,3,3);
include/sync_slave_sql_with_master.inc
[on slave]
update t3 set i1=100 where id=1;
update u3 set i1=100 where id=1;
[on master]
delete from t3 where id=1;
delete from u3 where id=1;
include/sync_slave_sql_with_master.inc
[on slave]
select count(*) from t3 force index(primary);
count(*)
2
select count(*) from t3 force index(i1);
count(*)
3
select count(*) from t3 force index(i2);
count(*)
2
select i1 from t3 where i1=100;
i1
100
select count(*) from u3 force index(primary);
count(*)
2
select count(*) from u3 force index(i1);
count(*)
2
select count(*) from u3 force index(i2);
count(*)
2
select i1 from u3 where i1=100;
i1
drop table t1, t2, t3, u2, u3;
drop procedure save_read_stats;
drop procedure get_read_stats;
include/rpl_end.inc