mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 122.224.95.144
Master_User: slaver
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000048
Read_Master_Log_Pos: 137205272
Relay_Log_File: localhost-relay-bin.000052
Relay_Log_Pos: 944094
Relay_Master_Log_File: mysql-bin.000037
Slave_IO_Running: Yes
Slave_SQL_Running: No
Replicate_Do_DB: human_resource
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 1091
Last_Error: Error 'Can't DROP 'user_id_2'; check that column/key exists' on query. Default database: 'human_resource'. Query: 'ALTER TABLE `company_position` DROP INDEX `user_id_2`'
Skip_Counter: 0
Exec_Master_Log_Pos: 943949
Relay_Log_Space: 148482078
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 2003
Last_IO_Error: error reconnecting to master 'slaver@122.224.95.144:3306' - retry-time: 60 retries: 86400
Last_SQL_Errno: 1091
Last_SQL_Error: Error 'Can't DROP 'user_id_2'; check that column/key exists' on query. Default database: 'human_resource'. Query: 'ALTER TABLE `company_position` DROP INDEX `user_id_2`'
1 row in set (0.00 sec)
------解决思路----------------------

'ALTER TABLE `company_position` DROP INDEX `user_id_2

SHOW BINLOG EVENTS IN 'mysql-bin.000048' FROM 137205272;

SET GLOBAL sql_slave_skip_counter = 1;

http://dev.mysql.com/doc/refman/5.1/en/set-global-sql-slave-skip-counter.html
------解决思路----------------------

SHOW BINLOG EVENTS IN 'mysql-bin.000037' FROM 943949;
------解决思路----------------------
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------解决思路----------------------

------解决思路----------------------
1. mysql> stop slave;
2. mysql> set global sql_slave_skip_counter=1;
3. mysql> start slave;
------解决思路----------------------
http://hi.baidu.com/ytjwt/blog/item/5f355acf4dd9d635b600c893.html

--转自