eatoncys edited a comment on issue #24238: [SPARK-27320][SQL]Converting seq to array in AggregationIterator to improve its access performance URL: https://github.com/apache/spark/pull/24238#issuecomment-477823120 @srowen @kiszk @HyukjinKwon Thanks for review. I have modified it to use `for (expression <- expressions)`. @HyukjinKwon, although here's non-critical path, but I think it's better to use `for` to traverse a list than to use index
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