aokolnychyi commented on code in PR #51091:
URL: https://github.com/apache/spark/pull/51091#discussion_r2167380335
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sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/MergeRowsExec.scala:
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@@ -45,6 +47,14 @@ case class MergeRowsExec(
output: Seq[Attribute],
child: SparkPlan) extends UnaryExecNode {
+ override lazy val metrics: Map[String, SQLMetric] = Map(
+ "numTargetRowsCopied" -> SQLMetrics.createMetric(sparkContext,
+ "Number of target rows rewritten unmodified because they did not meet
any condition."),
+ "numTargetRowsUnused" -> SQLMetrics.createMetric(sparkContext,
Review Comment:
Discussed with @szehon-ho on unused metrics offline and decide to hold off
adding them for now.
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