code: def _build_table_options(self, row):
          
          options = dict((o, row.get(o)) for o in self.recognized_table_options if o in row)
  
          # the option name when creating tables is "dclocal_read_repair_chance",
          # but the column name in system.schema_columnfamilies is
          # "local_read_repair_chance".  We'll store this as dclocal_read_repair_chance,
          # since that's probably what users are expecting (and we need it for the
          # CREATE TABLE statement anyway).
          if "local_read_repair_chance" in options:
              val = options.pop("local_read_repair_chance")
              options["dclocal_read_repair_chance"] = val
  
          return options
docs: Setup the mostly-non-schema table options, like caching settings