Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Fixed
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10.3.29, 10.3.31
Description
Consider the following primitive test case executed on an instance with Spider engine loaded and spider_same_server_link=1, and databases test, db1, db2 and db3 created:
MariaDB [test]> create server srv1 foreign data wrapper mysql
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-> options (host '127.0.0.1', database 'db1', user 'root', port 3306);
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Query OK, 0 rows affected (0.000 sec)
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MariaDB [test]> create server srv2 foreign data wrapper mysql options (host '127.0.0.1', database 'db2', user 'root', port 3306);
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Query OK, 0 rows affected (0.000 sec)
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MariaDB [test]> create server srv3 foreign data wrapper mysql options (host '127.0.0.1', database 'db3', user 'root', port 3306);
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Query OK, 0 rows affected (0.000 sec)
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MariaDB [test]> create table db1.ts(id int primary key, c1 int) engine=innodb;
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Query OK, 0 rows affected (0.183 sec)
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MariaDB [test]> create table db2.ts(id int primary key, c1 int) engine=innodb;
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Query OK, 0 rows affected (0.185 sec)
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MariaDB [test]> create table db3.ts(id int primary key, c1 int) engine=innodb;
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Query OK, 0 rows affected (0.194 sec)
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MariaDB [test]> insert into db1.ts values (1,1);
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Query OK, 1 row affected (0.038 sec)
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MariaDB [test]> insert into db2.ts values (2,2);
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Query OK, 1 row affected (0.032 sec)
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MariaDB [test]> insert into db3.ts values (3,3), (4,5);
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Query OK, 2 rows affected (0.033 sec)
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Records: 2 Duplicates: 0 Warnings: 0
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MariaDB [test]> create table ts(id int primary key, c1 int) engine=spider partition by list columns(id) (partition p1 values in (1) comment='srv "srv1", table "ts"' engine=spider, partition p2 values in (2) comment='srv "srv2", table "ts"' engine=spider, partition prest default comment='srv "srv3", table "ts"' engine=spider);
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Query OK, 0 rows affected (0.033 sec)
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MariaDB [test]> select * from ts;
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+----+------+
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| id | c1 |
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+----+------+
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| 1 | 1 |
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| 2 | 2 |
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| 3 | 3 |
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| 4 | 5 |
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+----+------+
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4 rows in set (0.007 sec)
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MariaDB [test]> select * from ts where id=1;
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+----+------+
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| id | c1 |
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+----+------+
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| 1 | 1 |
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+----+------+
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1 row in set (0.002 sec)
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MariaDB [test]> select * from ts;
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+----+------+
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| id | c1 |
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+----+------+
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| 1 | 1 |
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+----+------+
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1 row in set (0.002 sec)
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MariaDB [test]> select version();
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+-----------------+
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| version() |
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+-----------------+
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| 10.3.31-MariaDB |
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+-----------------+
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1 row in set (0.000 sec)
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MariaDB [test]> select * from ts where id=2;
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+----+------+
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| id | c1 |
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+----+------+
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| 2 | 2 |
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+----+------+
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1 row in set (0.002 sec)
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MariaDB [test]> select * from ts;
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+----+------+
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| id | c1 |
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+----+------+
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| 2 | 2 |
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+----+------+
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1 row in set (0.002 sec)
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As you can see, the result of:
select * from ts;
depends on what specific partition was targeted by the previous SELECT. Something is stored somewhere and not cleaned up properly.
Attachments
Issue Links
- duplicates
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- Closed
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