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#
chunking module

Extensions for chunking records and mapped arrays.

## col_idxs_mapper GroupIdxsMapper

Default instance of GroupIdxsMapper for per-column indices.

## col_lens_mapper GroupLensMapper

Default instance of GroupLensMapper for per-column lengths.

## fix_field_in_records function

    fix_field_in_records(
        record_arrays,
        chunk_meta,
        ann_args=None,
        mapper=None,
        field='col'
    )

Fix a field of the record array in each chunk.

## merge_records function

    merge_records(
        results,
        chunk_meta,
        ann_args=None,
        mapper=None
    )

Merge chunks of record arrays.

Mapper is only applied on the column field.

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