Github user kayousterhout commented on a diff in the pull request:
https://github.com/apache/spark/pull/1309#discussion_r14695974
--- Diff: core/src/main/scala/org/apache/spark/ui/jobs/StagePage.scala ---
@@ -217,6 +223,7 @@ private[ui] class StagePage(parent: JobProgressTab)
extends WebUIPage("stage") {
<h4>Summary Metrics for {numCompleted} Completed Tasks</h4> ++
<div>{summaryTable.getOrElse("No tasks have reported metrics
yet.")}</div> ++
<h4>Aggregated Metrics by Executor</h4> ++ executorTable.toNodeSeq
++
+ <h4>Accumulators</h4> ++ accumulableTable ++
--- End diff --
Can we show this only if there are >0 accumulators?
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