Github user squito commented on a diff in the pull request:
https://github.com/apache/spark/pull/7770#discussion_r36018865
--- Diff: core/src/main/scala/org/apache/spark/ui/jobs/StagePage.scala ---
@@ -67,6 +68,8 @@ private[ui] class StagePage(parent: StagesTab) extends
WebUIPage("stage") {
// if we find that it's okay.
private val MAX_TIMELINE_TASKS =
parent.conf.getInt("spark.ui.timeline.tasks.maximum", 1000)
+ private val displayPeakExecutionMemory =
+ parent.conf.getOption("spark.sql.unsafe.enabled").exists(_.toBoolean)
--- End diff --
I haven't fully digested how this works yet, but won't you get this metric
even w/out sql, and even w/out unsafe? I thought that you are collecting the
data on all uses of `Aggregator`?
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