Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/18113#discussion_r150388500
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/aggregate/typedaggregators.scala
---
@@ -26,8 +26,9 @@ import org.apache.spark.sql.expressions.Aggregator
// This file defines internal implementations for aggregators.
////////////////////////////////////////////////////////////////////////////////////////////////////
+class TypedSumDouble[IN](val f: IN => Double)
+ extends Aggregator[IN, Double, Double] {
-class TypedSumDouble[IN](val f: IN => Double) extends Aggregator[IN,
Double, Double] {
--- End diff --
let's avoid this unnecessary change.
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