Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/8737#discussion_r39365573
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/cluster/YarnSchedulerBackend.scala
---
@@ -91,6 +91,7 @@ private[spark] abstract class YarnSchedulerBackend(
filterParams.foreach { case (k, v) =>
conf.set(s"spark.$filterName.param.$k", v) }
scheduler.sc.ui.foreach { ui =>
JettyUtils.addFilters(ui.getHandlers, conf) }
}
+
scheduler.sc.executorAllocationManager.foreach(_.reSetNumExecutorsTarget())
--- End diff --
Yes this whole change needs a better explanation. At a high leve, why does
it occur and why is this the right fix? This doesn't look right
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