mariadb/mysql-test/suite/perfschema/t/start_server_low_index.test

# Tests for PERFORMANCE_SCHEMA

--source include/not_valgrind.inc
--source include/not_embedded.inc
--source include/have_perfschema.inc

--source ../include/start_server_common.inc


# NOTE : Index stats are manifested during table creation. To force a low index
# condition, performance_schema_max_index_stat must be set to the number of
# all system table indexes, plus 1.

#############################
# Setup database and tables.
#############################
--disable_warnings
drop table if exists db1.t1;
drop database if exists db1;
--enable_warnings
create database db1;
create table db1.t1 (a int, b char(10) default 'default',
                         unique key uidx(a));

#######################
# Execute few queries.
#######################
insert into db1.t1 values('1', 'abc');
insert into db1.t1 values('2', 'abc');
select * from db1.t1 where a='1';

#####################################################
# Run few queries on Performance Schema stats tables.
#####################################################
# There should be 3 entries in following table. 2 for insert and 1 for select.
select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME
  from performance_schema.table_io_waits_summary_by_table
  where OBJECT_SCHEMA='db1'
  order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME;

# Stats for 2 indexes (full scan, uidx)
select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME
  from performance_schema.table_io_waits_summary_by_index_usage
  where OBJECT_SCHEMA='db1'
  order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME;

flush tables;

# Stats for full scan lost
select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME
  from performance_schema.table_io_waits_summary_by_table
  where OBJECT_SCHEMA='db1'
  order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME;

# Stats for only 1 index, uidx
# Stats for full scan lost
select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME
  from performance_schema.table_io_waits_summary_by_index_usage
  where OBJECT_SCHEMA='db1'
  order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME;

# Expect INDEX_STAT lost, we have room for 1 out of 2
--disable_warnings
select variable_value > 0 from information_schema.global_status
  where variable_name like 'PERFORMANCE_SCHEMA_INDEX_STAT_LOST';

# While at it, check that FLUSH STATUS Resets the lost counter
FLUSH STATUS;

select variable_value from information_schema.global_status
  where variable_name like 'PERFORMANCE_SCHEMA_INDEX_STAT_LOST';
--enable_warnings


create table db1.t2 (a int, b char(10) default 'default',
                         unique key uidx(a));

#######################
# Execute few queries.
#######################
insert into db1.t1 values('3', 'abc');
insert into db1.t1 values('4', 'abc');
select * from db1.t1 where a='1';

insert into db1.t2 values('1', 'abc');
insert into db1.t2 values('2', 'abc');
select * from db1.t2 where a='1';

#####################################################
# Run few queries on Performance Schema stats tables.
#####################################################

select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME
  from performance_schema.table_io_waits_summary_by_table
  where OBJECT_SCHEMA='db1'
  order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME;

select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME
  from performance_schema.table_io_waits_summary_by_index_usage
  where OBJECT_SCHEMA='db1'
  order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME;

flush tables;

select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME
  from performance_schema.table_io_waits_summary_by_table
  where OBJECT_SCHEMA='db1'
  order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME;

select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME
  from performance_schema.table_io_waits_summary_by_index_usage
  where OBJECT_SCHEMA='db1'
  order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME;

# Expect INDEX_STAT lost
--disable_warnings
select variable_value > 0 from information_schema.global_status
  where variable_name like 'PERFORMANCE_SCHEMA_INDEX_STAT_LOST';
--enable_warnings

FLUSH STATUS;


#####################################################################################
# Update setup_objects to DISABLE TABLE and check index lost stats after flush tables
#####################################################################################

update performance_schema.setup_objects set ENABLED='NO' where OBJECT_TYPE='TABLE';



#######################
# Execute few queries.
#######################
insert into db1.t1 values('5', 'abc');
insert into db1.t1 values('6', 'abc');
select * from db1.t1 where a='1';

insert into db1.t2 values('3', 'abc');
insert into db1.t2 values('4', 'abc');
select * from db1.t2 where a='1';

# Empty, objects are disabled
select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME
  from performance_schema.table_io_waits_summary_by_table
  where OBJECT_SCHEMA='db1'
  order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME;

# Empty, objects are disabled
select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME
  from performance_schema.table_io_waits_summary_by_index_usage
  where OBJECT_SCHEMA='db1'
  order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME;

flush tables;

# Empty, objects are disabled
select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME
  from performance_schema.table_io_waits_summary_by_table
  where OBJECT_SCHEMA='db1'
  order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME;

# Empty, objects are disabled
select COUNT_STAR, OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME
  from performance_schema.table_io_waits_summary_by_index_usage
  where OBJECT_SCHEMA='db1'
  order by OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, INDEX_NAME;

# Do not expect lost counter in INDEX_STAT 
--disable_warnings
select variable_value from information_schema.global_status
  where variable_name like 'PERFORMANCE_SCHEMA_INDEX_STAT_LOST';
--enable_warnings

###########
# Cleanup.
###########
drop database db1;

update performance_schema.setup_objects set ENABLED='YES'
  where OBJECT_TYPE='TABLE' and OBJECT_SCHEMA="%";