Github user dongjoon-hyun commented on the issue: https://github.com/apache/spark/pull/19943 That's a good point, @cloud-fan . I also agreed to see the result for that before (at the my initial PR.) First of all, we can compare the results with `OrcReadBenchmark.scala` in this PR before going with aggregation. Since we have the foundation for that, @viirya can update his PR more easily than before. I love to see the fastest Apache Spark ORC!
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