code: private void readExternalProperties()
      {
          schemas = HBasePropertyReader.hsmd.getDataStore() != null ? HBasePropertyReader.hsmd.getDataStore()
                  .getSchemas() : null;
          List<Table> tables = null;
          if (schemas != null && !schemas.isEmpty())
          {
              for (Schema s : schemas)
              {
                  if (s.getName() != null && s.getName().equalsIgnoreCase(databaseName))
                  {
                      tables = s.getTables();
                  }
              }
          }
          if (tables != null && !tables.isEmpty())
          {
              for (Table table : tables)
              {
                  externalProperties.put(HBaseUtils.getHTableName(databaseName, table.getName()), table.getProperties());
              }
          }
      }
docs: Read external properties.