Andy Grove created ARROW-4602:
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             Summary: [Rust][ [DataFusion] Integrate query optimizer with 
ExecutionContext
                 Key: ARROW-4602
                 URL: https://issues.apache.org/jira/browse/ARROW-4602
             Project: Apache Arrow
          Issue Type: Improvement
          Components: Rust, Rust - DataFusion
    Affects Versions: 0.12.0
            Reporter: Andy Grove
            Assignee: Andy Grove
             Fix For: 0.13.0


Integrate the new projection push down query optimizer rule with the query 
engine so that queries only load referenced columns from disk.



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