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--source include/have_innodb.inc
--source include/big_test.inc
--source include/not_embedded.inc
# Valgrind is to slow for this test
--source include/not_valgrind.inc
set global innodb_defragment_stats_accuracy = 80;
# Create table.
CREATE TABLE t1 (a INT NOT NULL PRIMARY KEY AUTO_INCREMENT, b VARCHAR(256), KEY SECOND(a, b)) ENGINE=INNODB;
## Test-1 defragment an empty table
optimize table t1;
## Test-2 defragment a single page table
INSERT INTO t1 VALUES (100000, REPEAT('A', 256));
INSERT INTO t1 VALUES (200000, REPEAT('A', 256));
INSERT INTO t1 VALUES (300000, REPEAT('A', 256));
INSERT INTO t1 VALUES (400000, REPEAT('A', 256));
optimize table t1;
## Test-3 defragment (somewhat) in parallel with delete queries
let $data_size = 10000;
let $delete_size = 100;
delimiter //;
create procedure defragment()
begin
set @i = 0;
repeat
set @i = @i + 1;
optimize table t1;
until @i = 3 end repeat;
end //
delimiter ;//
# Populate table.
let $i = $data_size;
--disable_query_log
BEGIN;
while ($i)
{
eval
INSERT INTO t1 VALUES ($data_size + 1 - $i, REPEAT('A', 256));
dec $i;
}
COMMIT;
--enable_query_log
select count(stat_value) from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_pages_freed');
select count(stat_value) from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_page_split');
select count(stat_value) from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_leaf_pages_defrag');
select count(*) from t1;
connect (con1,localhost,root,,test,$MASTER_MYPORT,$MASTER_MYSOCK);
connection con1;
--send call defragment()
connection default;
--disable_query_log
let $size = $delete_size;
while ($size)
{
let $j = 100 * $size;
eval delete from t1 where a between $j - 20 and $j;
dec $size;
}
--enable_query_log
connection con1;
--disable_result_log
--reap
--enable_result_log
connection default;
disconnect con1;
optimize table t1;
--source include/restart_mysqld.inc
select count(*) from t1;
select count(stat_value) = 0 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_pages_freed');
select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_page_split');
select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_leaf_pages_defrag');
select count(*) from t1 force index (second);
select count(stat_value) = 0 from mysql.innodb_index_stats where table_name like '%t1%' and index_name = 'second' and stat_name in ('n_pages_freed');
select count(stat_value) = 0 from mysql.innodb_index_stats where table_name like '%t1%' and index_name = 'second' and stat_name in ('n_page_split');
select count(stat_value) = 0 from mysql.innodb_index_stats where table_name like '%t1%' and index_name = 'second' and stat_name in ('n_leaf_pages_defrag');
## Test-4 defragment with larger n_pages
# delete some more records
--disable_query_log
let $size = $delete_size;
while ($size)
{
let $j = 100 * $size;
eval delete from t1 where a between $j - 30 and $j - 20;
dec $size;
}
--enable_query_log
SET @@global.innodb_defragment_n_pages = 3;
# This will not reduce number of pages by a lot
optimize table t1;
--source include/restart_mysqld.inc
select count(stat_value) < 3 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_pages_freed');
select count(stat_value) < 3 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_page_split');
select count(stat_value) < 3 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_leaf_pages_defrag');
select count(*) from t1;
# We didn't create large wholes with the previous deletion, so if innodb_defragment_n_pages = 3, we won't be able to free up many pages.
select count(stat_value) < 3 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_pages_freed');
select count(stat_value) < 3 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_page_split');
select count(stat_value) < 3 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_leaf_pages_defrag');
select count(*) from t1 force index (second);
# Same holds for secondary index, not many pages are released.
select count(stat_value) = 0 from mysql.innodb_index_stats where table_name like '%t1%' and index_name = 'second' and stat_name in ('n_pages_freed');
select count(stat_value) = 0 from mysql.innodb_index_stats where table_name like '%t1%' and index_name = 'second' and stat_name in ('n_page_split');
select count(stat_value) = 0 from mysql.innodb_index_stats where table_name like '%t1%' and index_name = 'second' and stat_name in ('n_leaf_pages_defrag');
SET @@global.innodb_defragment_n_pages = 10;
optimize table t1;
--source include/restart_mysqld.inc
select count(stat_value) > 1 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_pages_freed');
select count(stat_value) > 1 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_page_split');
select count(stat_value) > 1 from mysql.innodb_index_stats where table_name like '%t1%' and stat_name in ('n_leaf_pages_defrag');
select count(*) from t1 force index (second);
# Same holds for secondary index, not many pages are released.
select count(stat_value) = 0 from mysql.innodb_index_stats where table_name like '%t1%' and index_name = 'second' and stat_name in ('n_pages_freed');
select count(stat_value) = 0 from mysql.innodb_index_stats where table_name like '%t1%' and index_name = 'second' and stat_name in ('n_page_split');
select count(stat_value) = 0 from mysql.innodb_index_stats where table_name like '%t1%' and index_name = 'second' and stat_name in ('n_leaf_pages_defrag');
DROP PROCEDURE defragment;
DROP TABLE t1;
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