Jorge created ARROW-9420:
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             Summary: Add repartition/shuffle plan
                 Key: ARROW-9420
                 URL: https://issues.apache.org/jira/browse/ARROW-9420
             Project: Apache Arrow
          Issue Type: Improvement
          Components: Rust - DataFusion
            Reporter: Jorge


Some operations (group by, join, over(window.partition_by)) greatly benefit 
from hash partitioning.

This is a proposal to add hash partitioning (based on a expression) to this 
library, so that optimizers can be written to optimize the plan based on the 
required hashing.




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