[metasrv] do not assert protocol_version to be 0, to make it compatible with query that sends protocol_version
@@ -98,7 +98,7 @@ impl MetaService for MetaServiceImpl {
protocol_version,
payload,
} = req;
- assert_eq!(protocol_version, 0); // todo(ariesdevil): define server version, return un compatible error.
+ let _ = protocol_version;
let auth = BasicAuth::decode(&*payload).map_err(|e| Status::internal(e.to_string()))?;
let user = "root";
