Details
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Bug
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Status: Closed (View Workflow)
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Critical
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Resolution: Fixed
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10.1, 10.2.11, 10.2
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10.2.13
Description
ALTER TABLE EXCHANGE PARTITION does not work properly if the tables and partitions involved were created with the DATA DIRECTORY option specified.
To reproduce, first create a data directory:
sudo mkdir -p /mysql/
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sudo chown mysql:mysql /mysql/
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sudo chmod 0750 /mysql/
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Then create a partitioned table that uses the new data directory:
CREATE TABLE test_swap_part_data_dir
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(
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myid INT(11) NOT NULL,
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myval VARCHAR(10),
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PRIMARY KEY (myid)
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) ENGINE=INNODB PARTITION BY KEY (myid)
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(
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PARTITION p0001 DATA DIRECTORY = '/mysql/' ENGINE = INNODB,
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PARTITION p0002 DATA DIRECTORY = '/mysql/' ENGINE = INNODB,
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PARTITION p0003 DATA DIRECTORY = '/mysql/' ENGINE = INNODB,
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PARTITION p0004 DATA DIRECTORY = '/mysql/' ENGINE = INNODB,
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PARTITION p0005 DATA DIRECTORY = '/mysql/' ENGINE = INNODB,
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PARTITION p0006 DATA DIRECTORY = '/mysql/' ENGINE = INNODB,
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PARTITION p0007 DATA DIRECTORY = '/mysql/' ENGINE = INNODB,
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PARTITION p0008 DATA DIRECTORY = '/mysql/' ENGINE = INNODB,
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PARTITION p0009 DATA DIRECTORY = '/mysql/' ENGINE = INNODB,
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PARTITION p0010 DATA DIRECTORY = '/mysql/' ENGINE = INNODB,
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PARTITION p0011 DATA DIRECTORY = '/mysql/' ENGINE = INNODB,
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PARTITION p0012 DATA DIRECTORY = '/mysql/' ENGINE = INNODB,
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PARTITION p0013 DATA DIRECTORY = '/mysql/' ENGINE = INNODB,
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PARTITION p0014 DATA DIRECTORY = '/mysql/' ENGINE = INNODB,
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PARTITION p0015 DATA DIRECTORY = '/mysql/' ENGINE = INNODB
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);
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And then create an identical non-partitioned table that uses the data directory:
CREATE TABLE test_swap_part_data_dir_p0001
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(
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myid INT(11) NOT NULL,
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myval VARCHAR(10),
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PRIMARY KEY (myid)
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) ENGINE=INNODB DATA DIRECTORY = '/mysql/';
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And then swap the tablespace of this table with one of the partitions:
ALTER TABLE test_swap_part_data_dir EXCHANGE PARTITION p0001 WITH TABLE test_swap_part_data_dir_p0001;
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And then if you look at the definition of test_swap_part_data_dir, you can see that the DATA DIRECTORY value for partition p0001 is no longer correct:
MariaDB [db1]> SHOW CREATE TABLE test_swap_part_data_dir\G
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*************************** 1. row ***************************
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Table: test_swap_part_data_dir
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Create Table: CREATE TABLE `test_swap_part_data_dir` (
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`myid` int(11) NOT NULL,
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`myval` varchar(10) DEFAULT NULL,
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PRIMARY KEY (`myid`)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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PARTITION BY KEY (`myid`)
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(PARTITION `p0001` DATA DIRECTORY = '/mysql/test_swap_part_data_dir_p0001' ENGINE = InnoDB,
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PARTITION `p0002` DATA DIRECTORY = '/mysql' ENGINE = InnoDB,
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PARTITION `p0003` DATA DIRECTORY = '/mysql' ENGINE = InnoDB,
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PARTITION `p0004` DATA DIRECTORY = '/mysql' ENGINE = InnoDB,
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PARTITION `p0005` DATA DIRECTORY = '/mysql' ENGINE = InnoDB,
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PARTITION `p0006` DATA DIRECTORY = '/mysql' ENGINE = InnoDB,
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PARTITION `p0007` DATA DIRECTORY = '/mysql' ENGINE = InnoDB,
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PARTITION `p0008` DATA DIRECTORY = '/mysql' ENGINE = InnoDB,
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PARTITION `p0009` DATA DIRECTORY = '/mysql' ENGINE = InnoDB,
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PARTITION `p0010` DATA DIRECTORY = '/mysql' ENGINE = InnoDB,
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PARTITION `p0011` DATA DIRECTORY = '/mysql' ENGINE = InnoDB,
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PARTITION `p0012` DATA DIRECTORY = '/mysql' ENGINE = InnoDB,
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PARTITION `p0013` DATA DIRECTORY = '/mysql' ENGINE = InnoDB,
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PARTITION `p0014` DATA DIRECTORY = '/mysql' ENGINE = InnoDB,
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PARTITION `p0015` DATA DIRECTORY = '/mysql' ENGINE = InnoDB)
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1 row in set (0.00 sec)
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Of course, this data directory doesn't even exist:
$ sudo ls -l /mysql/test_swap_part_data_dir_p0001
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ls: cannot access /mysql/test_swap_part_data_dir_p0001: No such file or directory
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But surprisingly, the table can still be queried:
MariaDB [db1]> SELECT * FROM test_swap_part_data_dir;
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Empty set (0.00 sec)
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MariaDB [db1]> CHECK TABLE test_swap_part_data_dir;
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+-----------------------------+-------+----------+----------+
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| Table | Op | Msg_type | Msg_text |
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+-----------------------------+-------+----------+----------+
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| db1.test_swap_part_data_dir | check | status | OK |
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+-----------------------------+-------+----------+----------+
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1 row in set (0.00 sec)
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