Function parquet2::read::get_field_columns

pub fn get_field_columns<'a>(
    metadata: &'a FileMetaData, 
    row_group: usize, 
    field: &'a ParquetType
) -> impl Iterator<Item = &'a ColumnChunkMetaData>

Returns an Iterator of ColumnChunkMetaData corresponding to the columns from field at row_group. For primitive fields (e.g. i64), the iterator has exactly one item.