Neal Richardson created ARROW-16630: ---------------------------------------
Summary: [C++] Proper BottomK support in SinkNode
Key: ARROW-16630
URL: https://issues.apache.org/jira/browse/ARROW-16630
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Neal Richardson
BottomK is implemented as TopK on reverse-sorted data. You get the rows you
wanted, but the problem is that they're in reversed order.
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