--source include/have_innodb.inc
--source include/big_test.inc
--source include/not_valgrind.inc
--source include/not_embedded.inc

--disable_warnings
DROP TABLE if exists t1;
--enable_warnings

--disable_query_log
let $innodb_defragment_stats_accuracy_orig=`select @@innodb_defragment_stats_accuracy`;
--enable_query_log

select @@global.innodb_stats_persistent;
set global innodb_defragment_stats_accuracy = 20;

--echo # Create table.
CREATE TABLE t1 (a INT NOT NULL PRIMARY KEY AUTO_INCREMENT, b VARCHAR(256), KEY SECOND(a, b)) ENGINE=INNODB;

--echo # Populate data
INSERT INTO t1 VALUES(1, REPEAT('A', 256));
INSERT INTO t1 (b) SELECT b from t1;
INSERT INTO t1 (b) SELECT b from t1;
INSERT INTO t1 (b) SELECT b from t1;
INSERT INTO t1 (b) SELECT b from t1;
INSERT INTO t1 (b) SELECT b from t1;
INSERT INTO t1 (b) SELECT b from t1;
INSERT INTO t1 (b) SELECT b from t1;
INSERT INTO t1 (b) SELECT b from t1;
INSERT INTO t1 (b) SELECT b from t1;
INSERT INTO t1 (b) SELECT b from t1;

--echo # Not enough page splits to trigger persistent stats write yet.
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_pages_freed');
select count(stat_value) = 0 from mysql.innodb_index_stats where table_name like '%t1%' and  stat_name in ('n_leaf_pages_defrag');

INSERT INTO t1 (b) SELECT b from t1;

--echo # Persistent stats recorded.
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_pages_freed');
select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t1%' and  stat_name in ('n_leaf_pages_defrag');

--echo # Delete some rows.
let $num_delete = 20;
while ($num_delete)
{
    let $j = 100 * $num_delete;
    eval delete from t1 where a between $j and $j + 30;
    dec $num_delete;
}

--source include/restart_mysqld.inc
--echo # Server Restarted

--echo # Confirm persistent stats still there after restart.
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_pages_freed');
select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t1%' and  stat_name in ('n_leaf_pages_defrag');

optimize table t1;
select sleep(2);

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_pages_freed');
select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t1%' and  stat_name in ('n_leaf_pages_defrag');

set global innodb_defragment_stats_accuracy = 40;

INSERT INTO t1 (b) SELECT b from t1;

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_pages_freed');
select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t1%' and  stat_name in ('n_leaf_pages_defrag');


INSERT INTO t1 (b) SELECT b from t1;

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_pages_freed');
select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t1%' and  stat_name in ('n_leaf_pages_defrag');


--echo # Table rename should cause stats rename.
rename table t1 to t2;
select sleep(1);

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_pages_freed');
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(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t2%' and  stat_name in ('n_page_split');
select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t2%' and  stat_name in ('n_pages_freed');
select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t2%' and  stat_name in ('n_leaf_pages_defrag');

--echo # Drop index should cause stats drop.
drop index SECOND on t2;
select sleep(3);

select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t2%' 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 '%t2%' 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 '%t2%' and index_name = 'SECOND' and stat_name in ('n_leaf_pages_defrag');

--source include/restart_mysqld.inc
--echo Server Restarted

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_pages_freed');
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(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t2%' and  stat_name in ('n_page_split');
select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t2%' and  stat_name in ('n_pages_freed');
select count(stat_value) > 0 from mysql.innodb_index_stats where table_name like '%t2%' and  stat_name in ('n_leaf_pages_defrag');

--echo # Clean up
DROP TABLE t2;

select count(stat_value) = 0 from mysql.innodb_index_stats where table_name like '%t2%' and  stat_name in ('n_page_split');
select count(stat_value) = 0 from mysql.innodb_index_stats where table_name like '%t2%' and  stat_name in ('n_pages_freed');
select count(stat_value) = 0 from mysql.innodb_index_stats where table_name like '%t2%' and  stat_name in ('n_leaf_pages_defrag');

--disable_query_log
EVAL SET GLOBAL innodb_defragment_stats_accuracy = $innodb_defragment_stats_accuracy_orig;
--enable_query_log