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#
# Testing of PRELOAD
#
# Slow test, don't run during staging part
-- source include/not_staging.inc
-- source include/have_maria.inc
--disable_warnings
drop table if exists t1, t2;
--enable_warnings
# Background dirty pages flushing may influence page cache stats:
let $def_checkinterval=`select @@global.aria_checkpoint_interval`;
set global aria_checkpoint_interval=0;
# Work around BUG#34911 "FLUSH STATUS doesn't flush what it should":
# compute differences in status variables before and after relevant
# queries. Aria_pagecache_read_requests varies accross machines.
create temporary table initial
select variable_name,variable_value from
information_schema.global_status where variable_name like "Aria_pagecache_reads";
# we don't use block-format because we want page cache stats
# about indices and not data pages.
create table t1 (
a int not null auto_increment,
b char(16) not null,
primary key (a),
key (b)
) engine=aria row_format=dynamic;
create table t2(
a int not null auto_increment,
b char(16) not null,
primary key (a),
key (b)
) engine=aria row_format=dynamic;
insert into t1(b) values
('test0'),
('test1'),
('test2'),
('test3'),
('test4'),
('test5'),
('test6'),
('test7');
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
select count(*) from t1;
select count(*) from t2;
flush tables; flush status;
let $show_stat=select g.variable_name,g.variable_value-i.variable_value from information_schema.global_status as g,initial as i where g.variable_name like "Aria_pagecache_read%" and g.variable_name=i.variable_name order by g.variable_name desc;
eval $show_stat;
select count(*) from t1 where b = 'test1';
eval $show_stat;
select count(*) from t1 where b = 'test1';
eval $show_stat;
flush tables; flush status;
select @@preload_buffer_size;
load index into cache t1;
eval $show_stat;
select count(*) from t1 where b = 'test1';
eval $show_stat;
flush tables; flush status;
eval $show_stat;
set session preload_buffer_size=256*1024;
select @@preload_buffer_size;
load index into cache t1 ignore leaves;
eval $show_stat;
select count(*) from t1 where b = 'test1';
eval $show_stat;
flush tables; flush status;
eval $show_stat;
set session preload_buffer_size=1*1024;
select @@preload_buffer_size;
load index into cache t1, t2 key (primary,b) ignore leaves;
eval $show_stat;
select count(*) from t1 where b = 'test1';
select count(*) from t2 where b = 'test1';
eval $show_stat;
flush tables; flush status;
eval $show_stat;
load index into cache t3, t2 key (primary,b) ;
eval $show_stat;
flush tables; flush status;
eval $show_stat;
load index into cache t3 key (b), t2 key (c) ;
eval $show_stat;
drop table t1, t2;
drop temporary table initial;
# check that Aria didn't use key cache
show status like "key_read%";
--disable_result_log
--disable_query_log
eval set global aria_checkpoint_interval=$def_checkinterval;
--enable_result_log
--enable_query_log
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