InnoDB: error in sec index entry update

MySQL的.eer错误日志中报了个错误，如下：
InnoDB: error in sec index entry update in
InnoDB: index `***idx` of table `***db`.`***tbl`
InnoDB: tuple DATA TUPLE: 2 fields;
 0: SQL NULL;
 1: len 4; hex 003a4b99; asc  :K ;;

InnoDB: record PHYSICAL RECORD: n_fields 2; compact format; info bits 0
 0: SQL NULL;
 1: len 4; hex 003a4174; asc  :At;;

TRANSACTION 5B0D26, ACTIVE 0 sec, process no 13587, OS thread id 1239374144 updating or deleting
mysql tables in use 1, locked 1
6 lock struct(s), heap size 1216, 3 row lock(s), undo log entries 3
MySQL thread id 9487, query id 43404284 192.168.1.1 ***user Updating
update ***tbl set ***column1=*** where ***column2=***

InnoDB: Submit a detailed bug report to http://bugs.mysql.com

对提示的***tbl表进行了检查：

mysql>check table ***tbl;
+-------------------------+-------+----------+----------+
| Table                   | Op    | Msg_type | Msg_text |
+-------------------------+-------+----------+----------+
| ***db.***tbl            | check | error    | Corrupt  |
+-------------------------+-------+----------+----------+

发现原来是表损坏了，很奇怪，表才建了不久，就出现了损坏，而且之前进行过一次optimize对表优化，难道是这个引起的，原因实在是搞不明白了，只能重建表解决该问题：
alter table ***tbl engine=innodb;

注意啊，大表重建可能需要较长时间和双倍的空间。

参考：

http://bugs.mysql.com/bug.php?id=17937

http://bugs.mysql.com/bug.php?id=37364