@AfterClass
  public static void tearDown() throws Exception {
    EnvFactory.getEnv().cleanClusterEnvironment();
  }
In this Class, we construct the scenario using DistinctAccumulator for
AggregationFunctionDistinct. Other cases are covered by {@link IoTDBTableViewAggregationIT}.
integration-test/src/test/java/org/apache/iotdb/relational/it/query/view/recent/IoTDBTableViewAggregationFunctionDistinctIT.java