private static void close() {
    if (Objects.nonNull(connection)) {
      try {
        connection.close();
      } catch (Exception e) {
        e.printStackTrace();
      }
    }
  }
@Author: Architect @Date: 2021-03-30 18:36 @Description: This class is initially intend to test
the issue of IOTDB-924
integration-test/src/test/java/org/apache/iotdb/db/it/IoTDBInsertMultiRowIT.java