Weston Pace created ARROW-17257:
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Summary: [C++] Unify KeyColumnArray and ArraySpan
Key: ARROW-17257
URL: https://issues.apache.org/jira/browse/ARROW-17257
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Weston Pace
Both of these are essentially non-owning views into ArrayData. They were
developed somewhat independently but share a pretty similar structure. I don't
think we need both and we should unify on a common type for simplicity provided
we can show no real performance difference.
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