MySQL同步 1032,1062异常 - 数据库编程

今天在MySQL同步中再次遇到了令人讨厌的 1062与1032错误。。

对于MySQL的replication，感觉有点不太靠谱，，我不知道其他DBA都是用哪些同步方案。

在思考是否需要换个同步方案，随着访问量的增加，一主一备看来也比较脆弱了。宕机风险也高。

先前态度比较乐观。根据错误的提示：

20131128_14:56:09mysql> show slave status\G;
20131128_14:56:09*************************** 1. row ***************************
20131128_14:56:09               Slave_IO_State: Waiting for master to send event
20131128_14:56:09                  Master_Host: 192.168.101.210
20131128_14:56:09                  Master_User: backup
20131128_14:56:09                  Master_Port: 3306
20131128_14:56:09                Connect_Retry: 60
20131128_14:56:09              Master_Log_File: mysql-bin.001472
20131128_14:56:09          Read_Master_Log_Pos: 339328924
20131128_14:56:09               Relay_Log_File: hostname-relay-bin.004513
20131128_14:56:09                Relay_Log_Pos: 66635985
20131128_14:56:09        Relay_Master_Log_File: mysql-bin.001472
20131128_14:56:09             Slave_IO_Running: Yes
20131128_14:56:09            Slave_SQL_Running: No
20131128_14:56:09              Replicate_Do_DB: 
20131128_14:56:09          Replicate_Ignore_DB: mysql,test
20131128_14:56:09           Replicate_Do_Table: 
20131128_14:56:09       Replicate_Ignore_Table: 
20131128_14:56:09      Replicate_Wild_Do_Table: 
20131128_14:56:09  Replicate_Wild_Ignore_Table: 
20131128_14:56:09                   Last_Errno: 1032
20131128_14:56:09                   Last_Error: Could not execute Update_rows event on table feiliu_bbs.uc_member_info; Duplicate entry '20551928' fo20131128_14:56:09r key 'PRIMARY', Error_code: 1062; Can't find record in 'uc_member_info', Error_code: 1032; handler error HA_ERR_END_OF_FILE; the ev20131128_14:56:09ent's master log mysql-bin.001472, end_log_pos 66636646
20131128_14:56:09                 Skip_Counter: 0
20131128_14:56:09          Exec_Master_Log_Pos: 66635839
20131128_14:56:09              Relay_Log_Space: 339336281
20131128_14:56:09              Until_Condition: None
20131128_14:56:09               Until_Log_File: 
20131128_14:56:09                Until_Log_Pos: 0
20131128_14:56:09           Master_SSL_Allowed: No
20131128_14:56:09           Master_SSL_CA_File: 
20131128_14:56:09           Master_SSL_CA_Path: 
20131128_14:56:09              Master_SSL_Cert: 
20131128_14:56:09            Master_SSL_Cipher: 
20131128_14:56:09               Master_SSL_Key: 
20131128_14:56:09        Seconds_Behind_Master: NULL
20131128_14:56:09Master_SSL_Verify_Server_Cert: No
20131128_14:56:09                Last_IO_Errno: 0
20131128_14:56:09                Last_IO_Error: 
20131128_14:56:09               Last_SQL_Errno: 1032
20131128_14:56:09               Last_SQL_Error: Could not execute Update_rows event on table feiliu_bbs.uc_member_info; Duplicate entry '20551928' fo20131128_14:56:09r key 'PRIMARY', Error_code: 1062; Can't find record in 'uc_member_info', Error_code: 1032; handler error HA_ERR_END_OF_FILE; the ev20131128_14:56:09ent's master log mysql-bin.001472, end_log_pos 66636646
20131128_14:56:09  Replicate_Ignore_Server_Ids: 
20131128_14:56:09             Master_Server_Id: 1

发现时主键重复与更新失败。

主键重复的情况按照常理说可以直接跳过，所以我写好了命令：

命令1：stop slave sql_thread;set global sql_slave_skip_counter=1;start slave sql_thread;

Mysql 的Replication主要两个线程：1:IO_Thread 2:SQL_Thread;

网上都是建议直接stop slave或者start slave.这里主要是sql_thread的异常中断，所以我只重启sql_thread;

然后执行过命令1之后，发现这种情况不停的发生。不停的一次次跳过太过繁琐，通过问题来看主要是针对表

feiliu_bbs.uc_member_info

最终实在忍受不了，就打算从主库dump一份最新的数据到备份。于是我做了如下操作：

0：停止slave的同步进程

stop slave;

1：在master端手动备份目标表：uc_member_info,改名为uc_member_info_bak

create table uc_member_info_bak

select * from uc_member_info where 1=2;

2：导出表

mysqldump -uroot -p dbname tablename > tablename.

MySQL同步 1032,1062异常(一)