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18 changes: 13 additions & 5 deletions hail/python/hail/vds/variant_dataset.py
Original file line number Diff line number Diff line change
Expand Up @@ -31,15 +31,23 @@ def read_vds(
:class:`.VariantDataset`
"""
if intervals or not n_partitions:
reference_data = hl.read_matrix_table(VariantDataset._reference_path(path), _intervals=intervals)
variant_data = hl.read_matrix_table(VariantDataset._variants_path(path), _intervals=intervals)
reference_data = hl.read_matrix_table(
VariantDataset._reference_path(path), _intervals=intervals, _assert_type=_assert_reference_type
)
variant_data = hl.read_matrix_table(
VariantDataset._variants_path(path), _intervals=intervals, _assert_type=_assert_variant_type
)
else:
assert n_partitions is not None
reference_data = hl.read_matrix_table(VariantDataset._reference_path(path))
reference_data = hl.read_matrix_table(VariantDataset._reference_path(path), _assert_type=_assert_reference_type)
intervals = reference_data._calculate_new_partitions(n_partitions)
assert len(intervals) > 0
reference_data = hl.read_matrix_table(VariantDataset._reference_path(path), _intervals=intervals)
variant_data = hl.read_matrix_table(VariantDataset._variants_path(path), _intervals=intervals)
reference_data = hl.read_matrix_table(
VariantDataset._reference_path(path), _intervals=intervals, _assert_type=reference_data._type
)
variant_data = hl.read_matrix_table(
VariantDataset._variants_path(path), _intervals=intervals, _assert_type=_assert_variant_type
)

# if LEN is missing, add it, _add_len is a no-op if LEN is already present
reference_data = VariantDataset._add_len(reference_data)
Expand Down