presto-hive/src/main/java/io/prestosql/plugin/hive/HiveWriter.java/HiveWriter/getPartitionUpdate
class HiveWriter:    public PartitionUpdate getPartitionUpdate()
    {
        return new PartitionUpdate(
                partitionName.orElse(""),
                updateMode,
                writePath,
                targetPath,
                ImmutableList.of(fileName),
                rowCount,
                inputSizeInBytes,
                fileWriter.getWrittenBytes());
    }