[GitHub] [arrow] jorisvandenbossche commented on a change in pull request #12584: ARROW-15870: [Python] Start to raise deprecation warnings for use_legacy_dataset=True in parquet.read_table

[GitBox <gi...@apache.org>]

jorisvandenbossche commented on a change in pull request #12584:
URL: https://github.com/apache/arrow/pull/12584#discussion_r827200147



##########
File path: python/pyarrow/parquet.py
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@@ -2006,6 +2007,12 @@ def read_table(source, columns=None, use_threads=True, metadata=None,
         return dataset.read(columns=columns, use_threads=use_threads,
                             use_pandas_metadata=use_pandas_metadata)
 
+    warnings.warn(
+        "Passing 'use_legacy_dataset=True' to get the legacy behaviour is "
+        "deprecated as of pyarrow 8.0.0, and the legacy implementation will "
+        "be removed in a future version.",
+        DeprecationWarning, stacklevel=2)

Review comment:
       We can probably directly raise a FutureWarning, but all the others here are still raising DeprecationWarnings. Will do a separate PR to change those all from deprecation to future warning.




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