amoeba opened a new issue, #39432: URL: https://github.com/apache/arrow/issues/39432
### Describe the enhancement requested Writing DictionaryArrays where the value type is nested is not currently implemented, see: https://github.com/apache/arrow/blob/75c6b642b5ff1ed171bc1d1a758a70098539c48e/cpp/src/parquet/arrow/path_internal.cc#L747-L749 The following code exercises the above code path, where a DictionaryArray is created over a ListArray: ```python import pyarrow as pa import pyarrow.parquet as pq arr = pa.DictionaryArray.from_arrays( ...: pa.array([0, 1, 2]), ...: pa.array([["a"], ["b"], ["c"]]) ...: ) tbl = pa.Table.from_arrays([arr], ["x"]) pq.write_table(tbl, "nested.pq") # => ArrowNotImplementedError: Writing DictionaryArray with nested dictionary type not yet supported ``` I didn't see an existing issue for this but please comment below if one does. ### Component(s) C++, Parquet -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
