@Override
  public AggrStats getAggrColStatsFor(String dbName, String tblName, List<String> colNames,
      List<String> partNames, String engine, String writeIdList) throws TException {
    return getAggrColStatsFor(getDefaultCatalog(conf), dbName, tblName, colNames,
        partNames, engine, writeIdList);
  }
Exchange the partitions between two tables

@param partitionSpecs       partitions specs of the parent partition to be exchanged
@param destDb               the db of the destination table
@param destinationTableName the destination table name
@return new partitions after exchanging
standalone-metastore/metastore-common/src/main/java/org/apache/hadoop/hive/metastore/HiveMetaStoreClient.java