Daniël Heres created ARROW-12439:
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Summary: [Rust] [DataFusion] Add support for eliminating hash
repartition
Key: ARROW-12439
URL: https://issues.apache.org/jira/browse/ARROW-12439
Project: Apache Arrow
Issue Type: Bug
Reporter: Daniël Heres
If the intermediate data is already partitioned on a certain expression (key),
the repartition doesn't have to be added (in a join), or should be removed in
an optimization rule. This will avoid having to repartition (and maybe shuffle
in Ballista).
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