static String[] parseNameServices(Map<String, String> properties) {
    String nameServices = properties.get("dfs.internal.nameservices");
    if (nameServices == null) {
      nameServices = properties.get("dfs.nameservices");
    }
    return splitAndTrimStrings(nameServices);
  }
Parses out the list of nameservices associated with this HDFS configuration.

@param properties config properties for this cluster

@return array of Strings that indicate the nameservices for this cluster
ambari-server/src/main/java/org/apache/ambari/server/controller/internal/BlueprintConfigurationProcessor.java