HyukjinKwon commented on a change in pull request #24238:
[SPARK-27320][SQL]Replacing index with iterator to traverse the expressions
list in AggregationIterator, which make it simpler
URL: https://github.com/apache/spark/pull/24238#discussion_r270263808
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/aggregate/AggregationIterator.scala
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@@ -74,13 +74,12 @@ abstract class AggregationIterator(
startingInputBufferOffset: Int): Array[AggregateFunction] = {
var mutableBufferOffset = 0
var inputBufferOffset: Int = startingInputBufferOffset
- val expressionsLength = expressions.length
- val functions = new Array[AggregateFunction](expressionsLength)
+ val functions = new Array[AggregateFunction](expressions.length)
var i = 0
val inputAttributeSeq: AttributeSeq = inputAttributes
- while (i < expressionsLength) {
- val func = expressions(i).aggregateFunction
- val funcWithBoundReferences: AggregateFunction = expressions(i).mode
match {
+ for (expression <- expressions) {
Review comment:
Looks there's two spaces between `expressions) {`. Let's make it one
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