INDEX_STATISTICS can not STATISTICS partition table

[limohao]

using script.txt create table and proc

 table part_date3 is a partitioning table

  table part_date3 is a normal table

then load data

call load_data3()
call load_data4()

open user statistics

set global userstat_running =1

then run

SELECT * FROM part_date3 p;

and

SELECT * FROM part_date4 p;

output information_schema.INDEX_STATISTICS

SELECT * FROM information_schema.INDEX_STATISTICS I;

'test', 'part_date4', 'PRIMARY', 12999
'mysql', 'proc', 'PRIMARY', 4

 part_date3 index has not STATISTIC.

[Trey Raymond (wraymond)]

This also affects table_statistics. what version is this fixed in?

[Przemek (pmalkowski)]

I can confirm this bug still exists in Percona Server 5.5.32:

mysql [localhost] {msandbox} (test) > CREATE TABLE `t1` (
    -> `id` int(11) DEFAULT NULL,
    -> KEY `id` (`id`)
    -> ) ENGINE=InnoDB;
Query OK, 0 rows affected (0.01 sec)

mysql [localhost] {msandbox} (test) > CREATE TABLE `p1` (
    -> `id` int(11) DEFAULT NULL,
    -> KEY `id` (`id`)
    -> ) ENGINE=InnoDB DEFAULT CHARSET=latin1
    -> /*!50100 PARTITION BY HASH (id)
    -> PARTITIONS 8 */;
Query OK, 0 rows affected (0.02 sec)

mysql [localhost] {msandbox} (test) > insert into p1 values (2),(33),(3),(100),(4);
Query OK, 5 rows affected (0.00 sec)
Records: 5 Duplicates: 0 Warnings: 0

mysql [localhost] {msandbox} (test) > insert into t1 values (2),(33),(3),(100),(4);
Query OK, 5 rows affected (0.00 sec)
Records: 5 Duplicates: 0 Warnings: 0

mysql [localhost] {msandbox} (test) > set global userstat=1;
Query OK, 0 rows affected (0.00 sec)

mysql [localhost] {msandbox} (test) > select * from t1;
+------+
| id |
+------+
| 2 |
| 3 |
| 4 |
| 33 |
| 100 |
+------+
5 rows in set (0.00 sec)

mysql [localhost] {msandbox} (test) > select * from p1;
+------+
| id |
+------+
| 2 |
| 3 |
| 4 |
| 33 |
| 100 |
+------+
5 rows in set (0.00 sec)

mysql [localhost] {msandbox} (test) > select * from INFORMATION_SCHEMA.INDEX_STATISTICS;
+--------------+------------+------------+-----------+
| TABLE_SCHEMA | TABLE_NAME | INDEX_NAME | ROWS_READ |
+--------------+------------+------------+-----------+
| test | t1 | id | 5 |
+--------------+------------+------------+-----------+
1 row in set (0.00 sec)

mysql [localhost] {msandbox} (test) > select * from INFORMATION_SCHEMA.TABLE_STATISTICS;
+--------------+------------+-----------+--------------+------------------------+
| TABLE_SCHEMA | TABLE_NAME | ROWS_READ | ROWS_CHANGED | ROWS_CHANGED_X_INDEXES |
+--------------+------------+-----------+--------------+------------------------+
| test | t1 | 5 | 5 | 5 |
+--------------+------------+-----------+--------------+------------------------+
1 row in set (0.00 sec)

While INFORMATION_SCHEMA.CLIENT_STATISTICS and INFORMATION_SCHEMA.THREAD_STATISTICS are not affected.

[Valerii Kravchuk (valerii-kravchuk)]

PS 5.1 is also affected:

[openxs@chief p5.1]$ bin/mysql --no-defaults -uroot test
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.1.68 Source distribution

Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> create table t1 (id int primary key) engine=InnoDB;
Query OK, 0 rows affected (0.07 sec)

mysql> create table p1 (id int primary key) engine=InnoDB partition by hash(id) partitions 8;
Query OK, 0 rows affected (0.11 sec)

mysql> insert into t1 values (2), (33), (3), (100), (4);
Query OK, 5 rows affected (0.01 sec)
Records: 5 Duplicates: 0 Warnings: 0

mysql> insert into p1 values (2), (33), (3), (100), (4);
Query OK, 5 rows affected (0.01 sec)
Records: 5 Duplicates: 0 Warnings: 0

mysql> set global userstat=1;
ERROR 1193 (HY000): Unknown system variable 'userstat'
mysql> set global userstat_running=1;
Query OK, 0 rows affected (0.00 sec)

mysql> select * from t1;
+-----+
| id |
+-----+
| 2 |
| 3 |
| 4 |
| 33 |
| 100 |
+-----+
5 rows in set (0.00 sec)

mysql> select * from p1;
+-----+
| id |
+-----+
| 2 |
| 3 |
| 4 |
| 33 |
| 100 |
+-----+
5 rows in set (0.00 sec)

mysql> select * from INFORMATION_SCHEMA.INDEX_STATISTICS;
+--------------+------------+------------+-----------+
| TABLE_SCHEMA | TABLE_NAME | INDEX_NAME | ROWS_READ |
+--------------+------------+------------+-----------+
| test | t1 | PRIMARY | 5 |
+--------------+------------+------------+-----------+
1 row in set (0.00 sec)

mysql> select * from INFORMATION_SCHEMA.TABLE_STATISTICS;
+--------------+------------+-----------+--------------+------------------------+
| TABLE_SCHEMA | TABLE_NAME | ROWS_READ | ROWS_CHANGED | ROWS_CHANGED_X_INDEXES |
+--------------+------------+-----------+--------------+------------------------+
| test | t1 | 5 | 0 | 0 |
+--------------+------------+-----------+--------------+------------------------+
1 row in set (0.00 sec)

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PS-1833