presto-hive/src/main/java/io/prestosql/plugin/hive/HiveMetadata.java/HiveMetadata/createPartitionStatistics
class HiveMetadata:    private PartitionStatistics createPartitionStatistics(
            ConnectorSession session,
            HiveBasicStatistics basicStatistics,
            Map<String, Type> columnTypes,
            Map<ColumnStatisticMetadata, Block> computedColumnStatistics)
    {
        long rowCount = basicStatistics.getRowCount().orElseThrow(() -> new IllegalArgumentException("rowCount not present"));
        Map<String, HiveColumnStatistics> columnStatistics = fromComputedStatistics(
                session,
                timeZone,
                computedColumnStatistics,
                columnTypes,
                rowCount);
        return new PartitionStatistics(basicStatistics, columnStatistics);
    }