bkietz commented on a change in pull request #7156:
URL: https://github.com/apache/arrow/pull/7156#discussion_r426705881
##########
File path: python/pyarrow/tests/test_dataset.py
##########
@@ -1425,3 +1425,13 @@ def test_feather_format(tempdir):
write_feather(table, str(basedir / "data1.feather"), version=1)
with pytest.raises(ValueError):
ds.dataset(basedir, format="feather").to_table()
+
+
+def test_file_source_refcount():
+ from io import BytesIO
+ from sys import getrefcount
Review comment:
okay
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