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MySQL Test Framework for Troubleshooting
February, 04, 2018
Sveta Smirnova
What my Family Thinks I Do
2
What my Boss Thinks I Do
3
What I Really Do
4
• Why customer’s SQL works wrongly
I Investigate
5
• Why customer’s SQL works wrongly
• Is this true with all versions?
I Investigate
5
• Why customer’s SQL works wrongly
• Is this true with all versions?
• With all branches?
I Investigate
5
• Customer’s server version
I Often Need to Test
6
• Customer’s server version
• Same major branch, but latest version
I Often Need to Test
6
• Customer’s server version
• Same major branch, but latest version
• Latest version
I Often Need to Test
6
• Customer’s server version
• Same major branch, but latest version
• Latest version
• Upstream
I Often Need to Test
6
• Customer’s server version
• Same major branch, but latest version
• Latest version
• Upstream
•
Other forks (e.g. MariaDB)
I Often Need to Test
6
• Customer’s server version
• Same major branch, but latest version
• Latest version
• Upstream
•
Other forks (e.g. MariaDB)
•
Same scenario
I Often Need to Test
6
Not an Option!
Test Manually?
7
• MySQL Sandbox
•
Complicated installations with single command
•
Scripts to start/stop/restart mysqld
• Does NOT enter code for you!
Solutions
8
• MySQL Sandbox
• Docker
• Runs everything you wish with single command
•
Not much version variations pre-installed
• You need to write Dockerfile if you want
Custom setup
Custom options
Run SQL inside Docker
• Does NOT check results!
Solutions
8
• MySQL Sandbox
• Docker
• MySQL Test Framework
Solutions
8
$cat mtr_test_1.test
#--source include/have_innodb.inc
source include/have_innodb.inc;
CREATE TABLE ‘t‘ (
‘id‘ int(11) NOT NULL,
‘f‘ varchar(100) DEFAULT NULL,
PRIMARY KEY (‘id‘)
) ENGINE=InnoDB;
insert into t values(12345, ’value1’), (54321, ’value2’);
select * from t;
show create table t;
drop table if exists t;
SQL you are Used to
9
sveta@delly:~/build/ps-5.7/mysql-test$ cat suite/mtr_test/t/mtr_test_2-master.opt
--transaction-isolation=read-committed
Custom Options
10
--source include/have_innodb.inc
CREATE TABLE ‘t‘ (‘id‘ int(11) NOT NULL, ‘f‘ varchar(100) DEFAULT NULL,
PRIMARY KEY (‘id‘)) ENGINE=InnoDB;
insert into t values(12345, ’value1’), (54321, ’value2’);
begin;
select * from t;
--connect(addconroot,localhost,root,,)
--connection addconroot
begin;
update t set f=’foo’ where id=12345;
commit;
--connection default
select * from t;
drop table if exists t;
Concurrent Execution
11
--source include/have_innodb.inc
CREATE TABLE ‘t‘ (‘id‘ int(11) NOT NULL, ‘f‘ varchar(100) DEFAULT NULL,
PRIMARY KEY (‘id‘)) ENGINE=InnoDB;
insert into t values(12345, ’value1’), (54321, ’value2’);
begin;
select * from t where id=12345 lock in share mode;
--connect(addconroot,localhost,root,,)
--connection addconroot
set innodb_lock_wait_timeout=3;
begin;
--error 1205
update t set f=’value3’ where id=12345;
rollback;
--connection default
rollback;
drop table if exists t;
Error Handling
12
...
--connect(addconroot,localhost,root,,)
--connection addconroot
begin;
select * from t where id=54321 for update;
--connection default
--send update t set f=’value3’ where id=54321
--connection addconroot
update t set f=’value3’ where id=12345;
--connection default
--error 1213
--reap
...
Result Processing
13
...
--exec $MYSQL_DUMP test > $MYSQL_TEST_DIR/var/tmp/mtr_amer_5.sql
--exec ls $MYSQL_TEST_DIR/var/tmp/
drop table t;
show tables;
--exec $MYSQL test < $MYSQL_TEST_DIR/var/tmp/mtr_amer_5.sql
show tables;
select * from t;
...
External Commands
14
--source include/have_innodb.inc
CREATE TABLE ‘t‘ (‘id‘ int(11) NOT NULL, ‘f‘ varchar(100) DEFAULT NULL,
PRIMARY KEY (‘id‘)) ENGINE=InnoDB;
--disable_query_log
--let $c=1
while ($c<100)
{
--eval insert into t values($c, md5($c))
--inc $c
}
--enable_query_log
Flow Control
15
sveta@delly:~/build/ps-5.7/mysql-test$ cat suite/mtr_test/t/rpl_mtr_test_7.test
--source include/master-slave.inc
--source include/have_innodb.inc
# We are on master
CREATE TABLE ‘t‘ (‘id‘ int(11) NOT NULL, ‘f‘ varchar(100) DEFAULT NULL,
PRIMARY KEY (‘id‘)) ENGINE=InnoDB;
insert into t values(12345, ’value1’), (54321, ’value2’);
select * from t;
show create table t;
--connection slave
--vertical_results
show slave status;
--connection master
--horizontal_results
update t set f=’foo’;
Replication from the Box
16
#We are on master
--sync_slave_with_master
#We are on slave
select * from t;
--connection master
drop table if exists t;
--sync_slave_with_master
stop slave;
Replication from the Box
16
• On master
sveta@delly:~/build/ps-5.7/mysql-test$ cat suite/mtr_test/t/rpl_mtr_test_7-master.opt
--gtid_mode=ON --log-slave-updates --enforce-gtid-consistency --binlog-format=row
Replication Options
17
• On master
sveta@delly:~/build/ps-5.7/mysql-test$ cat suite/mtr_test/t/rpl_mtr_test_7-master.opt
--gtid_mode=ON --log-slave-updates --enforce-gtid-consistency --binlog-format=row
• On slave
sveta@delly:~/build/ps-5.7/mysql-test$ cat suite/mtr_test/t/rpl_mtr_test_7-slave.opt
--gtid_mode=ON --log-slave-updates --enforce-gtid-consistency --binlog-format=row
Replication Options
17
--let $rpl_topology= 1->2,2->3,3->1
--source include/rpl_init.inc
Any Complicated Setup
18
--let $rpl_topology= 1->2,2->3,3->1
--source include/rpl_init.inc
# On server 1
--let $rpl_connection_name= server_1
--source include/rpl_connection.inc
create table t1(id int) engine=innodb;
insert into t1 values(1);
Any Complicated Setup
18
--let $rpl_topology= 1->2,2->3,3->1
--source include/rpl_init.inc
# On server 1
--let $rpl_connection_name= server_1
--source include/rpl_connection.inc
create table t1(id int) engine=innodb;
insert into t1 values(1);
# On server 2
--let $rpl_connection_name= server_2
--source include/rpl_connection.inc
create table t2(id int) engine=innodb;
insert into t2 values(2);
# On server 3
--let $rpl_connection_name= server_3
--source include/rpl_connection.inc
create table t3(id int) engine=innodb;
insert into t3 values(3);
Any Complicated Setup
18
sveta@delly:~/build/ps-5.7/mysql-test$ cat suite/mtr_test/t/rpl_mtr_test_9.cnf
!include ../../rpl/my.cnf
Complicated Replication Options
19
sveta@delly:~/build/ps-5.7/mysql-test$ cat suite/mtr_test/t/rpl_mtr_test_9.cnf
!include ../../rpl/my.cnf
[mysqld.1]
log-slave-updates
gtid_mode=ON
enforce-gtid-consistency
Complicated Replication Options
19
sveta@delly:~/build/ps-5.7/mysql-test$ cat suite/mtr_test/t/rpl_mtr_test_9.cnf
!include ../../rpl/my.cnf
[mysqld.1]
log-slave-updates
gtid_mode=ON
enforce-gtid-consistency
[mysqld.2]
master-info-repository=TABLE
relay-log-info-repository=TABLE
log-slave-updates
gtid_mode=ON
enforce-gtid-consistency
[mysqld.3]
# Third server options
[ENV]
SERVER_MYPORT_3= @mysqld.3.port
SERVER_MYSOCK_3= @mysqld.3.socket
Complicated Replication Options
19
sveta@delly:~/build/ps-5.7/mysql-test$ ./mtr --suite=your_suite your_test
Logging: ./mtr
MySQL Version 5.7.19
...
==============================================================================
TEST RESULT TIME (ms) or COMMENT
--------------------------------------------------------------------------
worker[1] Using MTR_BUILD_THREAD 300, with reserved ports 13000..13009
create table t1(f1 int);
insert into t1 values(1);
select * from t1;
f1
1
drop table t1;
your_suite.your_test [ pass ] 45802
--------------------------------------------------------------------------
The servers were restarted 0 times
Spent 45.802 of 61 seconds executing testcases
Run by Single Command
20
• Record result:
sveta@delly:~/build/ps-5.7/mysql-test$ ./mtr --record --suite=your_suite your_test
Logging: ./mtr
MySQL Version 5.7.19
Checking supported features...
...
==============================================================================
TEST RESULT TIME (ms) or COMMENT
--------------------------------------------------------------------------
worker[1] Using MTR_BUILD_THREAD 300, with reserved ports 13000..13009
your_suite.your_test [ pass ] 45802
--------------------------------------------------------------------------
The servers were restarted 0 times
Spent 45.802 of 61 seconds executing testcases
Completed: All 1 tests were successful.
Run by Single Command
20
• mysql-scripts
On Any Number of Servers
21
• mysql-scripts
•
Run tests: do test.sh
On Any Number of Servers
21
• mysql-scripts
•
Run tests: do test.sh
• With single version
$ cp suite/mtr_test/t/mtr_test_1.test ~/src/tests/t
$ do_test.sh -b ps-5.7
Logging: ./mysql-test-run.pl --record --force mtr_test_1
MySQL Version 5.7.19
...
On Any Number of Servers
21
• mysql-scripts
•
Run tests: do test.sh
•
With multiple versions
$ do_test.sh -b ps-5.7 -b ps-5.6 -b ps-5.5
Logging: ./mysql-test-run.pl --record --force mtr_test_1
MySQL Version 5.7.19
Checking supported features...
...
On Any Number of Servers
21
• mysql-scripts
•
Run tests: do test.sh
• Archive: ar test.sh
On Any Number of Servers
21
• mysql-scripts
•
Run tests: do test.sh
• Archive: ar test.sh
• Copy to remote box: scp test.sh
On Any Number of Servers
21
• SQL Syntax
• Custom commands
• Any complicated setups
• Runs everything automatically
•
Checks results
MySQL Test Framework
22
dev.mysql.com/doc/dev/mysql-server/latest/PAGE_MYSQL_TEST_RUN.html
https://github.com/svetasmirnova/mysql-scripts
https://github.com/svetasmirnova/mtr_test
http://www.slideshare.net/SvetaSmirnova
https://twitter.com/svetsmirnova
Thank you!
23
DATABASE PERFORMANCE
MATTERS

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