Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/8931#discussion_r40735019
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/aggregate/TungstenAggregate.scala
---
@@ -39,7 +40,9 @@ case class TungstenAggregate(
override private[sql] lazy val metrics = Map(
"numInputRows" -> SQLMetrics.createLongMetric(sparkContext, "number of
input rows"),
- "numOutputRows" -> SQLMetrics.createLongMetric(sparkContext, "number
of output rows"))
+ "numOutputRows" -> SQLMetrics.createLongMetric(sparkContext, "number
of output rows"),
+ "numBytesUsed" ->
--- End diff --
+1 `peakMemoryUsed`. We will show the unit in the value string, right? So,
we do not say the unit in the metric name?
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