89 lines
2.3 KiB
Plaintext
89 lines
2.3 KiB
Plaintext
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), (5,5);
|
|
include/sync_slave_sql_with_master.inc
|
|
call save_read_stats();
|
|
update t1 set value=value+1 where id=1;
|
|
update t1 set value=value+1 where id=3;
|
|
select * from t1;
|
|
id value
|
|
1 2
|
|
2 2
|
|
3 4
|
|
4 4
|
|
5 5
|
|
include/sync_slave_sql_with_master.inc
|
|
call get_read_stats();
|
|
rows_requested
|
|
2
|
|
rows_read
|
|
2
|
|
rows_updated
|
|
2
|
|
rows_deleted
|
|
0
|
|
select * from t1;
|
|
id value
|
|
1 2
|
|
2 2
|
|
3 4
|
|
4 4
|
|
5 5
|
|
call save_read_stats();
|
|
delete from t1 where id in (4,5);
|
|
select * from t1;
|
|
id value
|
|
1 2
|
|
2 2
|
|
3 4
|
|
include/sync_slave_sql_with_master.inc
|
|
call get_read_stats();
|
|
rows_requested
|
|
2
|
|
rows_read
|
|
2
|
|
rows_updated
|
|
0
|
|
rows_deleted
|
|
2
|
|
select * from t1;
|
|
id value
|
|
1 2
|
|
2 2
|
|
3 4
|
|
drop table t1;
|
|
drop procedure save_read_stats;
|
|
drop procedure get_read_stats;
|
|
include/rpl_end.inc
|