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Mdev-10664 Add statuses about optimistic parallel replication stalls

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In this commit we are adding three more status variable to SHOW SLAVE
STATUS.  Slave_DDL_Events and Slave_Non_Transactional_Events.

Slave_DDL_Groups:- This status variable counts the occurrence of DDL
statements

Slave_Non_Transactional_Groups:- This variable count the occurrence
of non-transnational event group.

Slave_Transactional_Groups:- This variable count the occurrence
of transnational event group.

Patch Credit:- Kristian Nielsen
This commit is contained in:
Sachin Setiya
2018-04-19 14:31:20 +05:30
parent 547b00d910
commit 419385dbf1
14 changed files with 296 additions and 26 deletions
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64
mysql-test/suite/multi_source/multi_parallel.result Normal file
View File

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connect master1,127.0.0.1,root,,,$SERVER_MYPORT_1;
connect master2,127.0.0.1,root,,,$SERVER_MYPORT_2;
connect slave,127.0.0.1,root,,,$SERVER_MYPORT_3;
set global slave_parallel_threads=10;
change master 'master1' to
master_port=MYPORT_1,
master_host='127.0.0.1',
master_user='root';
change master 'master2' to
master_port=MYPORT_2,
master_host='127.0.0.1',
master_user='root';
start all slaves;
set default_master_connection = 'master1';
include/wait_for_slave_to_start.inc
set default_master_connection = 'master2';
include/wait_for_slave_to_start.inc
## Slave status variable
set default_master_connection = 'master1';
show status like 'slave_running';
Variable_name Value
Slave_running ON
set default_master_connection = 'master2';
show status like 'slave_running';
Variable_name Value
Slave_running ON
#master 1
connection master1;
##Running CURD operation
connection slave;
Slave_DDL_Groups= 20;
Slave_Non_Transactional_Groups= 20;
Slave_Transactional_Groups= 0;
#master 2
connection master2;
##Running CURD operation
connection slave;
Slave_DDL_Groups= 20;
Slave_Non_Transactional_Groups= 20;
Slave_Transactional_Groups= 0;
#master 1
connection master1;
##Running CURD operation
connection slave;
Slave_DDL_Groups= 40;
Slave_Non_Transactional_Groups= 20;
Slave_Transactional_Groups= 20;
stop all slaves;
Warnings:
Note 1938 SLAVE 'master2' stopped
Note 1938 SLAVE 'master1' stopped
set default_master_connection = 'master1';
include/wait_for_slave_to_stop.inc
set default_master_connection = 'master2';
include/wait_for_slave_to_stop.inc
set global slave_parallel_threads=0;
include/reset_master_slave.inc
disconnect slave;
connection master1;
include/reset_master_slave.inc
disconnect master1;
connection master2;
include/reset_master_slave.inc
disconnect master2;