code: def hashing_type(self, cluster='main'):
          
          if not self.config.has_section(cluster):
              raise SystemExit("Cluster '%s' not defined in %s"
                               % (cluster, self.config_file))
          hashing_type = 'carbon_ch'
          try:
              return self.config.get(cluster, 'hashing_type')
          except NoOptionError:
              return hashing_type
docs: Hashing type of cluster.