private void addRowGroup(ParquetMetadata parquetMetadata, List<RowGroup> rowGroups, BlockMetaData block) {
//rowGroup.total_byte_size = ;
List<ColumnChunkMetaData> columns = block.getColumns();
List<ColumnChunk> parquetColumns = new ArrayList<ColumnChunk>();
for (ColumnChunkMetaData columnMetaData : columns) {
ColumnChunk columnChunk = new ColumnChunk(columnMetaData.getFirstDataPageOffset()); // verify this is the right offset
columnChunk.file_path = block.getPath(); // they are in the same file for now
columnChunk.meta_data = new parquet.format.ColumnMetaData(
getType(columnMetaData.getType()),
toFormatEncodings(columnMetaData.getEncodings()),
Arrays.asList(columnMetaData.getPath().toArray()),