“Duplicate Entry” error for key PRIMARY on UPDATE query (RBR + Triggers)

Recently, I have faced one interesting issue with Master(Active)-Master(Passive) replication (RBR + Triggers). Passive master was stopped due to “Duplicate Entry” error with update statement. It was something like this. Last_Error: Error ‘Duplicate entry ‘29014131’ for key ‘PRIMARY” on query. Default database: ‘db’. Query: ‘UPDATE `db`.`tab1` SET `empid`=’103′, `name`=’Nilnandan’,  `address`=’India ‘, `postcode`=’D100′, `phone`=’878 515 7788’;…