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Bug #31893 Partitions: crash if subpartitions and engine change.

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The new default database engine for altered table was reassigned to
the old one. That's wrong thing by itself, and (as the engine
for a subpartition gets that new value) leads to DBUG_ASSERTION
in mysql_unpack_partition()


mysql-test/r/partition.result:
  Bug #31893 Partitions: crash if subpartitions and engine change.
  
  test result
mysql-test/t/partition.test:
  Bug #31893 Partitions: crash if subpartitions and engine change.
  
  test case
sql/sql_partition.cc:
  Bug #31893 Partitions: crash if subpartitions and engine change.
  
  Don't change part_info->default_engine_type if it's already set
This commit is contained in:
unknown 2007-10-31 16:01:29 +04:00
parent f97b8e48b8
commit ee4452dba4
3 changed files with 29 additions and 1 deletions
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14
mysql-test/r/partition.result
View File

@ -1291,4 +1291,18 @@ t1 CREATE TABLE `t1` (
`b` int(11) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY RANGE (b) (PARTITION p1 VALUES LESS THAN (10) ENGINE = MyISAM, PARTITION p2 VALUES LESS THAN (20) ENGINE = MyISAM) */
drop table t1, t2;
create table t1 (int_column int, char_column char(5))
PARTITION BY RANGE (int_column) subpartition by key (char_column)
(PARTITION p1 VALUES LESS THAN (5) ENGINE = InnoDB);
Warnings:
Warning 1286 Unknown table engine 'InnoDB'
alter table t1 PARTITION BY RANGE (int_column) subpartition by key (char_column)
(PARTITION p1 VALUES LESS THAN (5) ENGINE = myisam);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`int_column` int(11) DEFAULT NULL,
`char_column` char(5) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY RANGE (int_column) SUBPARTITION BY KEY (char_column) (PARTITION p1 VALUES LESS THAN (5) ENGINE = MyISAM) */
drop table t1;
End of 5.1 tests

11
mysql-test/t/partition.test
View File

@ -1528,4 +1528,15 @@ PARTITION BY RANGE (b) (
show create table t1;
drop table t1, t2;
#
# Bug #31893 Partitions: crash if subpartitions and engine change
#
create table t1 (int_column int, char_column char(5))
PARTITION BY RANGE (int_column) subpartition by key (char_column)
(PARTITION p1 VALUES LESS THAN (5) ENGINE = InnoDB);
alter table t1 PARTITION BY RANGE (int_column) subpartition by key (char_column)
(PARTITION p1 VALUES LESS THAN (5) ENGINE = myisam);
show create table t1;
drop table t1;
--echo End of 5.1 tests

5
sql/sql_partition.cc
View File

@ -5031,7 +5031,10 @@ the generated partition syntax in a correct manner.
*partition_changed= TRUE;
}
if (create_info->db_type == partition_hton)
part_info->default_engine_type= table->part_info->default_engine_type;
{
if (!part_info->default_engine_type)
part_info->default_engine_type= table->part_info->default_engine_type;
}
else
part_info->default_engine_type= create_info->db_type;
if (check_native_partitioned(create_info, &is_native_partitioned,