[DOC] Document limitation of userstats regarding partitioned tables

Bug #1207644 reported by Przemek
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Percona Server moved to https://jira.percona.com/projects/PS
Fix Released
Medium
Hrvoje Matijakovic
5.1
Fix Released
Medium
Hrvoje Matijakovic
5.5
Fix Released
Medium
Hrvoje Matijakovic
5.6
Fix Released
Medium
Hrvoje Matijakovic

Bug Description

[In:Percona Server Documentation]
As per still not fixed bug: lp:625045 - table and index statistics don't work with partitioned tables. Please describe this limitation in documentation - http://www.percona.com/doc/percona-server/5.5/diagnostics/user_stats.html

Tags: doc

Related branches

Przemek (pmalkowski)
description: updated
Revision history for this message
Valerii Kravchuk (valerii-kravchuk) wrote :

Same with documentation for 5.1 and 5.6 - we have to document this limitation until https://bugs.launchpad.net/percona-server/+bug/625045 is fixed:

[openxs@chief p5.6]$ 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: 5.6.12 MySQL Community Server (GPL)

Copyright (c) 2009-2013 Percona Ireland Ltd.
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 (0.41 sec)

mysql> create table p1 (id int primary key) engine=InnoDB partition by hash(id) partitions 8;
Query OK, 0 rows affected (2.59 sec)

mysql> insert into t1 values (2), (33), (3), (100), (4);
Query OK, 5 rows affected (0.04 sec)
Records: 5 Duplicates: 0 Warnings: 0

mysql> insert into p1 values (2), (33), (3), (100), (4);
Query OK, 5 rows affected (0.03 sec)
Records: 5 Duplicates: 0 Warnings: 0

mysql> set global userstat=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 |
+-----+
| 33 |
| 2 |
| 3 |
| 4 |
| 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)

Revision history for this message
Shahriyar Rzayev (rzayev-sehriyar) wrote :

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PS-1406

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