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  1. Apache Arrow
  2. ARROW-9758

[Rust] [DataFusion] Implement extension API for DataFusion

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      I would like the ability to extend DataFusion by providing my own:

      • Logical plan optimization rules
      • Physical query planner for converting logical plan to physical plan

      Later, I would also like to be able to provide physical plan optimization rules but we don't have a physical optimizer yet.

      These changes would allow people to extend DataFusion easily without implementing their own competing DataFrame APIs.

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              andygrove Andy Grove
              andygrove Andy Grove
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