MYSQL INNODB死锁问题

大家好，今天碰到一个纯insert操作造成的死锁问题，网上查了一下，有人说是由于GAP LOCK，阅读了相关文档以后，还是不能完全理解为什么会产生死锁，希望哪位朋友能帮忙解释一下。

表结构如下：
mysql> show create table MySQLBug;  
+----------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table | Create Table |
+----------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| MySQLBug | CREATE TABLE `MySQLBug` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `value` int(10) unsigned NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `Test_Index` (`value`)
) ENGINE=InnoDB AUTO_INCREMENT=22 DEFAULT CHARSET=utf8 | 
+----------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

开启两个不同的会话
session1
mysql> set autocommit=0;
Query OK, 0 rows affected (0.00 sec)

mysql> insert into MySQLBug(value) values(34);
Query OK, 1 row affected (0.00 sec)

mysql> insert into MySQLBug(value) values(680);
ERROR 1213 (40001): Deadlock found when trying to get lock; try restarting transaction
mysql> 


session2
mysql> set autocommit=0;
Query OK, 0 rows affected (0.00 sec)

mysql> insert into MySQLBug(value) values(680);
Query OK, 1 row affected (0.00 sec)

mysql> insert into MySQLBug(value) values(565); --这句一执行session1就报死锁

搜到一篇文章是类似现象
http://bugs.mysql.com/bug.php?id=51140
在文章的最后面有人给出了一些解释，不过没看太明白，还望大家指点一二，谢谢！

貌似并不是死锁 而只是锁等待

这是因为锁定了索引所在得页