Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/22473#discussion_r218941326
--- Diff: core/src/main/scala/org/apache/spark/executor/Executor.scala ---
@@ -799,7 +799,8 @@ private[spark] class Executor(
if (taskRunner.task != null) {
taskRunner.task.metrics.mergeShuffleReadMetrics()
taskRunner.task.metrics.setJvmGCTime(curGCTime -
taskRunner.startGCTime)
- accumUpdates += ((taskRunner.taskId,
taskRunner.task.metrics.accumulators()))
+ accumUpdates +=
+ ((taskRunner.taskId,
taskRunner.task.metrics.accumulators().filterNot(_.isZero)))
--- End diff --
Could you add a flag for this behavior change?
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