Description:
REPAIR table seems not to update checksum of the table, which lead to table corruption reported by CHECK TABLE followed repair table:
How to repeat:
create table crash(i int) checksum=1;
insert into crash values(1);
Now lets crash table by doing the following on console:
echo . > crash.MYD
mysql> check table crash;
+------------+-------+----------+---------------------------------------------+
| Table | Op | Msg_type | Msg_text |
+------------+-------+----------+---------------------------------------------+
| test.crash | check | error | Size of datafile is: 2 Should be: 6 |
| test.crash | check | error | Corrupt |
+------------+-------+----------+---------------------------------------------+
2 rows in set (0.25 sec)
mysql> repair table crash;
+------------+--------+----------+------------------------------------+
| Table | Op | Msg_type | Msg_text |
+------------+--------+----------+------------------------------------+
| test.crash | repair | warning | Number of rows changed from 1 to 0 |
| test.crash | repair | status | OK |
+------------+--------+----------+------------------------------------+
2 rows in set (0.32 sec)
mysql> check table crash;
+------------+-------+----------+-----------------------------------------------------------------------+
| Table | Op | Msg_type | Msg_text |
+------------+-------+----------+-----------------------------------------------------------------------+
| test.crash | check | warning | Record checksum is not the same as checksum stored in the index file
|
| test.crash | check | error | Corrupt |
+------------+-------+----------+-----------------------------------------------------------------------+
2 rows in set (0.00 sec)
mysql>
