@Override
  public UpdateSchema updateSchema() {
    return new HiveSchemaUpdate(this, hiveClient, hiveClient, super.updateSchema());
  }
Implementation of {@link UnkeyedTable} with Hive table as base store.
amoro-format-mixed/amoro-mixed-hive/src/main/java/org/apache/amoro/hive/table/UnkeyedHiveTable.java