MySQL Last_SQL_Errno: 1062

一、环境描述

1. CentOS 6.6

2.MySQL 5.6.25

3.基于gtid的复制

二、异常描述

误把从节点当成主节点插入一条数据，同一条数据在主、从节点插入都进行了一次插入操作，导致主键冲突，slave线程异常。

三、处理过程  

1.查看报错信息

(root@localhost) [(none)]> show slave status\G;

*************************** 1. row ***************************

               ...............略.............................

                   Last_Errno: 1062

                   Last_Error: Could not execute Write_rows event on table user-center.t_dea_info; Duplicate entry '89465d5d792541459e38cabaf677c95e' for key 'PRIMARY', Error_code: 1062; handler error HA_ERR_FOUND_DUPP_KEY; the event's master log mysql-bin.000005, end_log_pos 469856269

                 Skip_Counter: 0

          Exec_Master_Log_Pos: 469855892

              Relay_Log_Space: 470236370

              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: 0

                Last_IO_Error: 

               Last_SQL_Errno: 1062

               Last_SQL_Error: Could not execute Write_rows event on table user-center.t_dea_info; Duplicate entry '89465d5d792541459e38cabaf677c95e' for key 'PRIMARY', Error_code: 1062; handler error HA_ERR_FOUND_DUPP_KEY; the event's master log mysql-bin.000005, end_log_pos 469856269

  Replicate_Ignore_Server_Ids: 

             Master_Server_Id: 157

                  Master_UUID: 77220b08-41ab-11e5-b9be-000ec4cac97a

             Master_Info_File: mysql.slave_master_info

                    SQL_Delay: 0

          SQL_Remaining_Delay: NULL

      Slave_SQL_Running_State: 

           Master_Retry_Count: 86400

                  Master_Bind: 

      Last_IO_Error_Timestamp: 

     Last_SQL_Error_Timestamp: 170410 16:10:01

               Master_SSL_Crl: 

           Master_SSL_Crlpath: 

           Retrieved_Gtid_Set: 77220b08-41ab-11e5-b9be-000ec4cac97a:33417992-37560729

            Executed_Gtid_Set: 1d7e2d03-084b-11e6-88f0-000ec4cac979:1-3236,

716feeae-41b4-11e5-82c2-000ec4cac979:1-2,

77220b08-41ab-11e5-b9be-000ec4cac97a:1-37559950,

99bcf840-22f5-11e6-b6d2-000ec4cac981:1-10

                Auto_Position: 1

1 row in set (0.00 sec)

2.确认需要跳过的gtid是关键

找到这个已经执行的gtid，加1

77220b08-41ab-11e5-b9be-000ec4cac97a:1-37559950,

3.跳gtid

(root@localhost) [(none)]> stop slave;

(root@localhost) [(none)]> SET @@SESSION.GTID_NEXT= '77220b08-41ab-11e5-b9be-000ec4cac97a:37559951';

Query OK, 0 rows affected (0.00 sec)

(root@localhost) [(none)]> BEGIN; COMMIT;

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

(root@localhost) [(none)]> SET SESSION GTID_NEXT = AUTOMATIC;

Query OK, 0 rows affected (0.00 sec)

4.重启线程，查看状态，确认OK

(root@localhost) [(none)]> START SLAVE;

Query OK, 0 rows affected, 1 warning (0.00 sec)

(root@localhost) [(none)]> show slave status\G;

*************************** 1. row ***************************

  .........................略............................

              Master_Log_File: mysql-bin.000005

          Read_Master_Log_Pos: 470459548

               Relay_Log_File: relay-bin.000016

                Relay_Log_Pos: 70709

        Relay_Master_Log_File: mysql-bin.000005

             Slave_IO_Running: Yes

            Slave_SQL_Running: Yes

              Replicate_Do_DB: 

          Replicate_Ignore_DB: 

           Replicate_Do_Table: 

       Replicate_Ignore_Table: 

      Replicate_Wild_Do_Table: 

  Replicate_Wild_Ignore_Table: 

                   Last_Errno: 0

                   Last_Error: 

                 Skip_Counter: 0

          Exec_Master_Log_Pos: 470459548

              Relay_Log_Space: 114127

              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: 0

Master_SSL_Verify_Server_Cert: No

                Last_IO_Errno: 0

                Last_IO_Error: 

               Last_SQL_Errno: 0

               Last_SQL_Error: 

  Replicate_Ignore_Server_Ids: 

             Master_Server_Id: 157

                  Master_UUID: 77220b08-41ab-11e5-b9be-000ec4cac97a

             Master_Info_File: mysql.slave_master_info

                    SQL_Delay: 0

          SQL_Remaining_Delay: NULL

      Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it

           Master_Retry_Count: 86400

                  Master_Bind: 

      Last_IO_Error_Timestamp: 

     Last_SQL_Error_Timestamp: 

               Master_SSL_Crl: 

           Master_SSL_Crlpath: 

           Retrieved_Gtid_Set: 77220b08-41ab-11e5-b9be-000ec4cac97a:33417992-37561196

            Executed_Gtid_Set: 1d7e2d03-084b-11e6-88f0-000ec4cac979:1-3236,

716feeae-41b4-11e5-82c2-000ec4cac979:1-2,

77220b08-41ab-11e5-b9be-000ec4cac97a:1-37561196,

99bcf840-22f5-11e6-b6d2-000ec4cac981:1-10

                Auto_Position: 1

1 row in set (0.00 sec)

ERROR: 

No query specified

四、关键点

   1.找到需要跳过的GTID,知道为什么要加1，理解了原理，问题就迎刃而解了。