1.1、MySQL主从错误
Could not execute Update_rows event on table ezp-crm3.crm_job_stay_exec_vip; Can't find record in 'crm_job_stay_exec_vip', Error_code: 1032; handler error HA_ERR_KEY_NOT_FOUND; the event's master log mysql-bin.000039, end_log_pos 78846
1、 show processlist,查看当前连接数，也可以看看有没有执行中的进程
2、 在从库上执行show slave status; 查看seconds_behind_maste的值,有数字表示有主从延时,这个值表示主从同步延时的时间
mysql> show slave status\G
1. row
Slave_IO_State: Waiting for master to send event
Master_Host: 10.10.225.239
Master_User: ucloudbackup
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000039
Read_Master_Log_Pos: 3642231
Relay_Log_File: mysql-relay.000146
Relay_Log_Pos: 77961
Relay_Master_Log_File: mysql-bin.000039
Slave_IO_Running: Yes
Slave_SQL_Running: No
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 1032
Last_Error: Could not execute Update_rows event on table ezp-crm3.crm_job_stay_exec_vip; Can't find record in 'crm_job_stay_exec_vip', Error_code: 1032; handler error HA_ERR_KEY_NOT_FOUND; the event's master log mysql-bin.000039, end_log_pos 78846

如果未同步，在从库上执行下列操作：

stop slave;
#表示跳过一步错误，后面的数字可变
set global sql_slave_skip_counter =1;
start slave;
show slave status;

2.1、MySQL主从错误：
报错信息：Coordinator stopped because there were error(s) in the worker(s). The most recent failure being: Worker 1 failed executing transaction 'ANONYMOUS' at master log mysql-bin.001045, end_log_pos 454708145. See error log and/or performance_schema.replication_applier_status_by_worker table for more details about this failure or others, if any.
报错是1032，没有找到要操作的记录，有时候会出这个报错，原因是开启了并行复制，先关闭并行复制 重启复制就可以了，然后再打开并行复制。

解决方法
stop slave;
set global slave_parallel_workers=0;
start slave;
恢复后，可以改回来或者保持不修改
stop slave;
set global slave_parallel_workers=8;
start slave;