tree 0b65df7e53e2a3fe5f285d51296811b1fdcda335
parent 49455ec010b0627cda9dfb5b2f8ee8285a3bb2a1
author Andy Grove <andygrove73@gmail.com> 1618512226 +0200
committer Krisztián Szűcs <szucs.krisztian@gmail.com> 1618512226 +0200
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ARROW-12402: [Rust] [DataFusion] Implement SQL metrics example

This introduces a new method on `ExecutionPlan` to be able to access generic metrics from any physical operator.

One metric is implemented to demonstrate usage.

Closes #10049 from andygrove/ARROW-12402

Authored-by: Andy Grove <andygrove73@gmail.com>
Signed-off-by: Krisztián Szűcs <szucs.krisztian@gmail.com>