MySQL主从复制之GTID模式介绍

GTID同步在建立复制的时候，将传统复制由人为指定binlog的pos位点改为了 MASTER_AUTO_POSITION=1 自动获取binlog的pos位点。

Enjoy GreatSQL :)

第一种：在master上删除一条记录，而slave上找不到。

Last_SQL_Error: Could not execute Delete_rows event on table hcy.t1

Can't find record in 't1',

Error_code: 1032handler error HA_ERR_KEY_NOT_FOUND

the event's master log mysql-bin.000006, end_log_pos 254

第二种：主键重复。在slave已经有该记录，又在master上插入了同一条记录。

Last_SQL_Error: Could not execute Write_rows event on table hcy.t1

Duplicate entry '2' for key 'PRIMARY',

Error_code: 1062

handler error HA_ERR_FOUND_DUPP_KEYthe event's master log mysql-bin.000006, end_log_pos 924

第三种：在master上更新一条记录，而slave上找不到，丢失了数据。

Last_SQL_Error: Could not execute Update_rows event on table hcy.t1

Can't find record in 't1',

Error_code: 1032

handler error HA_ERR_KEY_NOT_FOUNDthe event's master log mysql-bin.000010, end_log_pos 263

异步半同步区别

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