jorisvandenbossche commented on code in PR #13677:
URL: https://github.com/apache/arrow/pull/13677#discussion_r957076412
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python/pyarrow/tests/test_dataset.py:
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@@ -4192,27 +4192,27 @@ def test_write_table_multiple_fragments(tempdir):
# Table with multiple batches written as single Fragment by default
base_dir = tempdir / 'single'
ds.write_dataset(table, base_dir, format="feather")
- assert set(base_dir.rglob("*")) == set([base_dir / "part-0.feather"])
+ assert set(base_dir.rglob("*")) == set([base_dir / "part-0.arrow"])
assert ds.dataset(base_dir, format="ipc").to_table().equals(table)
# Same for single-element list of Table
base_dir = tempdir / 'single-list'
ds.write_dataset([table], base_dir, format="feather")
- assert set(base_dir.rglob("*")) == set([base_dir / "part-0.feather"])
+ assert set(base_dir.rglob("*")) == set([base_dir / "part-0.arrow"])
assert ds.dataset(base_dir, format="ipc").to_table().equals(table)
# Provide list of batches to write multiple fragments
base_dir = tempdir / 'multiple'
ds.write_dataset(table.to_batches(), base_dir, format="feather")
assert set(base_dir.rglob("*")) == set(
- [base_dir / "part-0.feather"])
+ [base_dir / "part-0.arrow"])
Review Comment:
Personally, I am +1 on the suggestion of @kou for having a small
FeatherFileFormat class so that we can let the default extension name depend on
whether the user specified `format="ipc"` vs `format="feather"` (for the
reasons @kou gave).
I am only wondering if we can avoid making that public, so it's only used
under the hood if the user passed a string format name to write_dataset.
(I also do think it might be worth a broader discussion about to which
extent and how we want to keep using the Feather name)
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