public static String getPortFromInstanceName(String instanceName) {
    return instanceName.contains(INSTANCE_NAME_DELIMITER) ? instanceName.split(INSTANCE_NAME_DELIMITER)[1] : null;
  }
Construct and return the instance name for given data node id
@param dataNodeId the {@link DataNodeId} object.
@return the constructed instance name.
ambry-clustermap/src/main/java/com/github/ambry/clustermap/ClusterMapUtils.java