path: root/mysql-test/main/status.test

# This test requires that --log-output includes 'table', and the general
# log is on

# embedded server causes different stat
-- source include/not_embedded.inc

# Save the initial number of concurrent sessions
--source include/count_sessions.inc

# Disable concurrent inserts to avoid sporadic test failures as it might
# affect the the value of variables used throughout the test case.
set @old_concurrent_insert= @@global.concurrent_insert;
set @@global.concurrent_insert= 0;

# Disable logging to table, since this will also cause table locking and unlocking, which will
# show up in SHOW STATUS and may cause sporadic failures

SET @old_log_output = @@global.log_output;
SET GLOBAL LOG_OUTPUT = 'FILE';

# PS causes different statistics
--disable_ps_protocol

connect (con1,localhost,root,,);
connect (con2,localhost,root,,);
connection default;

flush status;

show status like 'Table_lock%';
select * from information_schema.session_status where variable_name like 'Table_lock%';

set sql_log_bin=0;
set @old_general_log = @@global.general_log;
set global general_log = 'OFF';
--disable_warnings
drop table if exists t1;
--enable_warnings

create table t1(n int) engine=myisam;
insert into t1 values(1);
select get_lock('mysqltest_lock', 100);

connection con2;
--echo # Sending:
--send update t1 set n = get_lock('mysqltest_lock', 100)

connection con1;
--echo # Wait for the first UPDATE to get blocked.
let $wait_condition= select count(*) from INFORMATION_SCHEMA.PROCESSLIST
                     where STATE = "User lock" and
                           INFO = "update t1 set n = get_lock('mysqltest_lock', 100)";
--source include/wait_condition.inc

let $ID= `select connection_id()`;
--echo # Sending:
--send update t1 set n = 3

connection default;
--echo # wait for the second UPDATE to get blocked
let $wait_condition= select 1 from INFORMATION_SCHEMA.PROCESSLIST
                     where ID = $ID and STATE = "Waiting for table level lock";
--source include/wait_condition.inc
select release_lock('mysqltest_lock');

connection con2;
--echo # Reaping first UPDATE
--reap
select release_lock('mysqltest_lock');

connection con1;
--echo # Reaping second UPDATE
reap;
show status like 'Table_locks_waited';

connection default;
drop table t1;
set global general_log = @old_general_log;

disconnect con2;
disconnect con1;

# End of 4.1 tests

#
# last_query_cost
#

select 1;
show status like 'last_query_cost';
create table t1 (a int);
insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
select * from t1 where a=6;
show status like 'last_query_cost';
# Ensure value dosn't change by second status call
show status like 'last_query_cost';
select 1;
show status like 'last_query_cost';
drop table t1;

#
# Test for Bug#15933 max_used_connections is wrong after FLUSH STATUS
# if connections are cached
#
#
# The first suggested fix from the bug report was chosen
# (see http://bugs.mysql.com/bug.php?id=15933):
#
#   a) On flushing the status, set max_used_connections to
#   threads_connected, not to 0.
#
#   b) Check if it is necessary to increment max_used_connections when
#   taking a thread from the cache as well as when creating new threads
#

# Wait for at most $disconnect_timeout seconds for disconnects to finish.
let $disconnect_timeout = 10;

# Wait for any previous disconnects to finish.
FLUSH STATUS;
--disable_query_log
--disable_result_log
eval SET @wait_left = $disconnect_timeout;
let $max_used_connections = `SHOW STATUS LIKE 'max_used_connections'`;
eval SET @max_used_connections = SUBSTRING('$max_used_connections', 21)+0;
let $wait_more = `SELECT @max_used_connections != 1 && @wait_left > 0`;
while ($wait_more)
{
  sleep 1;
  FLUSH STATUS;
  SET @wait_left = @wait_left - 1;
  let $max_used_connections = `SHOW STATUS LIKE 'max_used_connections'`;
  eval SET @max_used_connections = SUBSTRING('$max_used_connections', 21)+0;
  let $wait_more = `SELECT @max_used_connections != 1 && @wait_left > 0`;
}
--enable_query_log
--enable_result_log

# Prerequisite.
SHOW STATUS LIKE 'max_used_connections';
SELECT * FROM INFORMATION_SCHEMA.SESSION_STATUS WHERE VARIABLE_NAME LIKE 'max_used_connections';

# Save original setting.
SET @save_thread_cache_size=@@thread_cache_size;
SET GLOBAL thread_cache_size=3;

connect (con1,localhost,root,,);
connect (con2,localhost,root,,);

connection con1;
disconnect con2;

# Check that max_used_connections still reflects maximum value.
SHOW STATUS LIKE 'max_used_connections';
SELECT * FROM INFORMATION_SCHEMA.SESSION_STATUS WHERE VARIABLE_NAME LIKE 'max_used_connections';

# Check that after flush max_used_connections equals to current number
# of connections.  First wait for previous disconnect to finish.
FLUSH STATUS;
--disable_query_log
--disable_result_log
eval SET @wait_left = $disconnect_timeout;
let $max_used_connections = `SHOW STATUS LIKE 'max_used_connections'`;
eval SET @max_used_connections = SUBSTRING('$max_used_connections', 21)+0;
let $wait_more = `SELECT @max_used_connections != 2 && @wait_left > 0`;
while ($wait_more)
{
  sleep 1;
  FLUSH STATUS;
  SET @wait_left = @wait_left - 1;
  let $max_used_connections = `SHOW STATUS LIKE 'max_used_connections'`;
  eval SET @max_used_connections = SUBSTRING('$max_used_connections', 21)+0;
  let $wait_more = `SELECT @max_used_connections != 2 && @wait_left > 0`;
}
--enable_query_log
--enable_result_log
# Check that we don't count disconnected thread any longer.
SHOW STATUS LIKE 'max_used_connections';
SELECT * FROM INFORMATION_SCHEMA.SESSION_STATUS WHERE VARIABLE_NAME LIKE 'max_used_connections';

# Check that max_used_connections is updated when cached thread is
# reused...
connect (con2,localhost,root,,);
SHOW STATUS LIKE 'max_used_connections';
SELECT * FROM INFORMATION_SCHEMA.SESSION_STATUS WHERE VARIABLE_NAME LIKE 'max_used_connections';

# ...and when new thread is created.
connect (con3,localhost,root,,);
SHOW STATUS LIKE 'max_used_connections';
SELECT * FROM INFORMATION_SCHEMA.SESSION_STATUS WHERE VARIABLE_NAME LIKE 'max_used_connections';

# Restore original setting.
connection default;
SET GLOBAL thread_cache_size=@save_thread_cache_size;

disconnect con3;
disconnect con2;
disconnect con1;


#
# Bug#30377 EXPLAIN loses last_query_cost when used with UNION
#

CREATE TABLE t1 ( a INT );
INSERT INTO t1 VALUES (1), (2);

SELECT a FROM t1 LIMIT 1;
SHOW SESSION STATUS LIKE 'Last_query_cost';

EXPLAIN SELECT a FROM t1;
SHOW SESSION STATUS LIKE 'Last_query_cost';

SELECT a FROM t1 UNION SELECT a FROM t1 ORDER BY a;
SHOW SESSION STATUS LIKE 'Last_query_cost';

EXPLAIN SELECT a FROM t1 UNION SELECT a FROM t1 ORDER BY a;
SHOW SESSION STATUS LIKE 'Last_query_cost';

SELECT a IN (SELECT a FROM t1) FROM t1 LIMIT 1;
SHOW SESSION STATUS LIKE 'Last_query_cost';

SELECT (SELECT a FROM t1 LIMIT 1) x FROM t1 LIMIT 1;
SHOW SESSION STATUS LIKE 'Last_query_cost';

SELECT * FROM t1 a, t1 b LIMIT 1;
SHOW SESSION STATUS LIKE 'Last_query_cost';

DROP TABLE t1;


# End of 5.0 tests

#
# Ensure that SHOW STATUS only changes global status variables
#

connect (con1,localhost,root,,);
let $rnd_next = `show global status like 'handler_read_rnd_next'`;
let $tmp_table = `show global status like 'Created_tmp_tables'`;
show status like 'com_show_status';
show status like 'hand%write%';
show status like '%tmp%';
show status like 'hand%write%';
show status like '%tmp%';
show status like 'com_show_status';
let $rnd_next2 = `show global status like 'handler_read_rnd_next'`;
let $tmp_table2 = `show global status like 'Created_tmp_tables'`;
--disable_query_log
eval select substring_index('$rnd_next2',0x9,-1)-substring_index('$rnd_next',0x9,-1) as rnd_diff, substring_index('$tmp_table2',0x9,-1)-substring_index('$tmp_table',0x9,-1) as tmp_table_diff;
--enable_query_log
disconnect con1;
connection default;

#
# Bug#30252 Com_create_function is not incremented.
#
flush status;
show status like 'Com%function';

DELIMITER //;
create function f1 (x INTEGER) returns integer
  begin
    declare ret integer;
    set ret = x * 10;
    return ret;
  end //
DELIMITER ;//

drop function f1;

show status like 'Com%function';

#
# Bug#37908 Skipped access right check caused server crash.
#
connect (root, localhost, root,,test);
connection root;
let $root_connection_id= `select connection_id()`;
--disable_warnings
create database db37908;
--enable_warnings
create table db37908.t1(f1 int);
insert into db37908.t1 values(1);
create user mysqltest_1@localhost;
grant usage,execute on test.* to mysqltest_1@localhost;
delimiter |;
create procedure proc37908() begin select 1; end |
create function func37908() returns int sql security invoker
  return (select * from db37908.t1 limit 1)|
delimiter ;|

connect (user1,localhost,mysqltest_1,,test);
connection user1;
let $user1_connection_id= `select connection_id()`;

--error ER_TABLEACCESS_DENIED_ERROR
select * from db37908.t1;
--error ER_TABLEACCESS_DENIED_ERROR
show status where variable_name ='uptime' and 2 in (select * from db37908.t1);
--error ER_TABLEACCESS_DENIED_ERROR
show procedure status where name ='proc37908' and 1 in (select f1 from db37908.t1);
--error ER_TABLEACCESS_DENIED_ERROR
show function status where name ='func37908' and 1 in (select func37908());

connection default;
disconnect user1;
disconnect root;
drop database db37908;
drop procedure proc37908;
drop function func37908;
REVOKE ALL PRIVILEGES, GRANT OPTION FROM mysqltest_1@localhost;
DROP USER mysqltest_1@localhost;
# Wait till the sessions user1 and root are disconnected
let $wait_condition =
  SELECT COUNT(*) = 0
  FROM information_schema.processlist
  WHERE  id in ('$root_connection_id','$user1_connection_id');
--source include/wait_condition.inc

#
# Bug#41131 "Questions" fails to increment - ignores statements instead stored procs
#
connect (con1,localhost,root,,);
connection con1;
--disable_warnings
DROP PROCEDURE IF EXISTS p1;
DROP FUNCTION IF EXISTS f1;
--enable_warnings
DELIMITER $$;
CREATE FUNCTION f1() RETURNS INTEGER
BEGIN
  DECLARE foo INTEGER;
  DECLARE bar INTEGER;
  SET foo=1;
  SET bar=2;
  RETURN foo;
END $$
CREATE PROCEDURE p1()
  BEGIN
  SELECT 1;
END $$
DELIMITER ;$$
let $org_queries= `SHOW STATUS LIKE 'Queries'`;
SELECT f1();
CALL p1();
let $new_queries= `SHOW STATUS LIKE 'Queries'`;
--disable_query_log
let $diff= `SELECT SUBSTRING('$new_queries',9)-SUBSTRING('$org_queries',9)`;
--enable_query_log
eval SELECT $diff;
disconnect con1;
connection default;
DROP PROCEDURE p1;
DROP FUNCTION f1;

# End of 5.1 tests

#
# Test of internal temporary table status variables
#

flush status;
create table t1 (a int not null auto_increment primary key, g int, b blob);
insert into t1 (g,b) values (1,'a'), (2, 'b'), (3, 'b'), (1, 'c');
select * from t1;
select b, count(*) from t1 group by b;
select g, count(*) from t1 group by g;
show status like 'Row%';
show status like 'Handler%';
show status like '%tmp%';
drop table t1;

#
# Test of handler status counts
#
CREATE TABLE t1 (i int(11) DEFAULT NULL, KEY i (i) ) ENGINE=MyISAM;
insert into t1 values (1),(2),(3),(4),(5);
flush status;
select * from t1 where i=5 union select * from t1 where i=5;
show status like "handler%";
drop table t1;

# End of 5.3 tests

--echo #
--echo # MDEV-11153 - Introduce status variables for table cache monitoring and
--echo #              tuning
--echo #
SET @old_table_open_cache= @@table_open_cache;
SET @@global.table_open_cache=10;
FLUSH TABLES;
FLUSH STATUS;
SHOW STATUS LIKE 'Table_open_cache%';
disable_query_log;
let $i= `SELECT @@table_open_cache + 5`;
while ($i)
{
  eval CREATE TABLE t$i(a INT);
  eval DELETE FROM t$i;
  eval DELETE FROM t$i;
  eval DELETE FROM t$i;
  dec $i;
}
enable_query_log;
SHOW STATUS LIKE 'Table_open_cache%';
FLUSH TABLES;
FLUSH STATUS;
disable_query_log;
let $i= `SELECT @@table_open_cache + 5`;
while ($i)
{
  eval DROP TABLE t$i;
  dec $i;
}
enable_query_log;
SET @@global.table_open_cache= @old_table_open_cache;

--echo #
--echo # MDEV-14505 - Threads_running becomes scalability bottleneck
--echo #
--echo # Session status for Threads_running is currently always 1.
SHOW STATUS LIKE 'Threads_running';
SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.SESSION_STATUS WHERE VARIABLE_NAME='THREADS_RUNNING';
FLUSH STATUS;
SHOW STATUS LIKE 'Threads_running';
SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.SESSION_STATUS WHERE VARIABLE_NAME='THREADS_RUNNING';

--echo #
--echo # MDEV-15915 Add Feature_json status variable.
--echo #
SHOW STATUS LIKE 'Feature_json';
select json_valid('123');
SHOW STATUS LIKE 'Feature_json';

# Restore global concurrent_insert value. Keep in the end of the test file.
--connection default
set @@global.concurrent_insert= @old_concurrent_insert;
SET GLOBAL log_output = @old_log_output;

# Wait till we reached the initial number of concurrent sessions
--source include/wait_until_count_sessions.inc