Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/21898#discussion_r207758062
--- Diff: core/src/main/scala/org/apache/spark/SparkContext.scala ---
@@ -1930,6 +1930,12 @@ class SparkContext(config: SparkConf) extends
Logging {
Utils.tryLogNonFatalError {
_executorAllocationManager.foreach(_.stop())
}
+ if (_dagScheduler != null) {
--- End diff --
why this change?
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