MySQL error code
MySQL error 3857
MySQL server error 3857 is ER_RPL_CANT_STOP_REPLICA_WHILE_LOCKED_BACKUP, reported with SQLSTATE HY000.
Cannot stop the replica SQL thread while the instance is locked for backup. Try running `UNLOCK INSTANCE` first.
| Error | 3857 |
|---|---|
| Name | ER_RPL_CANT_STOP_REPLICA_WHILE_LOCKED_BACKUP |
| SQLSTATE | HY000 |
| Group | Server errors |
Source: MySQL 8.4 Error Reference