Daniël Heres created ARROW-11991:
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Summary: [Rust][DataFusion] Maintain partition information in Union
Key: ARROW-11991
URL: https://issues.apache.org/jira/browse/ARROW-11991
Project: Apache Arrow
Issue Type: Improvement
Components: Rust - DataFusion
Reporter: Daniël Heres
Currently it returns Partitioning::UnknownPartitioning(num_partitions) based on
the sum of partition counts (if available) of the underlying inputs. In case of
another partition scheme - such as hash partitioning, it would be better to
keep that information available, so other optimizations could be used.
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