一、简介：
mysql 5.7 多源复制，主从同步的时候，主库update一条数据，从库这条数据已经被删除，导致主从断掉。
Last_Errno: 1032
MySQL主从同步的1032错误，一般是指要更改的数据不存在，SQL_THREAD提取的日志无法应用故报错，造成同步失败
（Update、Delete、Insert一条已经delete的数据）。1032的错误本身对数据一致性没什么影响，影响最大的是造成了同步失败.
二、解决方案：
MySQL5.7.15-log版本，binlog模式为ROW。
show slave statusG,可以看到如下报错：
1 Last_Errno: 1032 2 Last_Error: Coordinator stopped because there were error(s) in the worker(s). The most recent failure being: Worker 3 failed executing transaction '1699 3 7e5e-5707-11e7-a702-94188201787c:161982297' at master log mysql-bin.000309, end_log_pos 774308000. See error log and/or performance_schema.replication_applier_status_by_worker table for more details about this failure or others, if any. Skip_Counter: 0 4 Exec_Master_Log_Pos: 774271552 5 Relay_Log_Space: 1266940262 6 Until_Condition: None 7 Until_Log_File: 8 Until_Log_Pos: 0 9 Master_SSL_Allowed: No 10 Master_SSL_CA_File: 11 Master_SSL_CA_Path: 12 Master_SSL_Cert: 13 Master_SSL_Cipher: 14 Master_SSL_Key: 15 Seconds_Behind_Master: NULL 16 Master_SSL_Verify_Server_Cert: No 17 Last_IO_Errno: 0 18 Last_IO_Error: 19 Last_SQL_Errno: 1032 20 Last_SQL_Error: Coordinator stopped because there were error(s) in the worker(s). The most recent failure being: Worker 3 failed executing transaction '1699 21 7e5e-5707-11e7-a702-94188201787c:161982297' at master log mysql-bin.000309, end_log_pos 774308000. See error log and/or performance_schema.replication_applier_status_by_worker table for more details about this failure or others, if any.
查看 error.log:
vim error.log
2018-10-26T01:55:00.133136+08:00 16179 [ERROR] Slave SQL for channel 'master_6': Worker 3 failed executing transaction '16997e5e-5707-11e7-a702-94188201787c:161982297' at master log mysql-bin.000309, end_log_pos 774308000; Could not execute Update_rows event on table test.test_log; Can't find record in 'test_log', Error_code: 1032; handler error HA_ERR_KEY_NOT_FOUND; the event's master log mysql-bin.000309, end_log_pos 774308000, Error_code: 1032
方法一：跳过错误
1）先跳过这一条错误,让主从同步恢复正常。（或者N条event，一条一条跳过）
set global sql_slave_skip_counter=1;
start slave sql_thread for channel 'master_6';
slave 起来之后，恢复数据，在从库上重新insert 进这条
2）The most recent failure being: Worker 3 failed executing transaction '169921 7e5e-5707-11e7-a702-94188201787c:161982297'
GTID 模式下还可以这样：
set gtid_next='169921 7e5e-5707-11e7-a702-94188201787c:161982297';
begin;
commit;
set gtid_next='automatic';
stop slave sql_thread for channel 'master_6';
start slave sql_thread for channel 'master_6';
方法二：还原被删除的数据
根据错误提示通过mysqlbinglog找到这条数据的sql， 此事件在主服务器Master binlog中的位置是mysql-bin.000309, end_log_pos77430800
1 [root@xxxxx binlog]# mysqlbinlog --no-defaults --stop-position=774308000 mysql-bin.000309 -vv |grep -A 20 774308000 2 #181026 1:55:00 server id 3663306 end_log_pos 774308000 CRC32 0x2969563a Update_rows: table id 52745 flags: STMT_END_F 3 4 BINLOG ' 5 dAPSWxPK5TcAWgAAAIr+Ji4AAAnOAAAAAAEAB21vbml0b3IAEWpvYl9leGVjdXRpb25fbG9nAAsP 6 Dw8PDwMPDwMRERCgAJAB/AP8A8gAUACAPgAAgAbDz1ww 7 dAPSWx/K5TcAFgIAAKAAJy4AAAnOAAAAAAEAAgAL/////4D8JDZlOGJjNGZlLTlmYzktNDllYS1h 8 NjliLWE4YmNjMWZjOGJlZiQAb21zVXBkYXRlV2FyZWhvdXNlT3JkZXJUYXNrU3RhdHVzSm9iZgBv 9 bXNVcGRhdGVXYXJlaG91c2VPcmRlclRhc2tTdGF0dXNKb2JALUAwQC1AUkVBRFlALUAxMC4xNTcu 10 MzIuMzlALUA2NTYyYzQ5YS0zMjQyLTQyNWQtODdhZC1lZTA4N2M0NmYzN2UXAGRwcHZkb2NzZXIx 11 OC5zZXBob3JhLmNuDDEwLjE1Ny4zMi4zOQAAAAAOTk9STUFMX1RSSUdHRVIAAAAAW9IDdID4JDZl 12 OGJjNGZlLTlmYzktNDllYS1hNjliLWE4YmNjMWZjOGJlZiQAb21zVXBkYXRlV2FyZWhvdXNlT3Jk 13 ZXJUYXNrU3RhdHVzSm9iZgBvbXNVcGRhdGVXYXJlaG91c2VPcmRlclRhc2tTdGF0dXNKb2JALUAw 14 QC1AUkVBRFlALUAxMC4xNTcuMzIuMzlALUA2NTYyYzQ5YS0zMjQyLTQyNWQtODdhZC1lZTA4N2M0 15 NmYzN2UXAGRwcHZkb2NzZXIxOC5zZXBob3JhLmNuDDEwLjE1Ny4zMi4zOQAAAAAOTk9STUFMX1RS 16 SUdHRVIBAAAAW9IDdFvSA3Q6Vmkp 17 '/*!*/; 18 ### UPDATE `test`.`test_log` 19 ### WHERE 20 ### @1='6e8bc4fe-9fc9-49ea-a69b-a8bcc1fc8bef' /* VARSTRING(160) meta=160 nullable=0 is_null=0 */ 21 ### @2='omsUpdateWarehouseOrderTaskStatusJob' /* VARSTRING(400) meta=400 nullable=0 is_null=0 */ 22 ### @3='omsUpdateWarehouseOrderTaskStatusJob@-@0@-@READY@-@1@-@6562c49a-3242-425d-87ad-ee087c46f37e' /* VARSTRING(1020) meta=1020 nullable=0 is_null=0 */
事务的语句为： UPDATE `test`.`test_log` where @1=‘’，@2=‘’ （@1为第一个字段，@2为第二个字段）
要是从库少了这个数据，把上面binglog中的update 改为insert
不要记录binlog：
set sql_log_bin=0;
insert into `test`.`test_log` values() ;
set sql_log_bin=1;
start slave sql_thread for channel 'master_6';