Github user gaborgsomogyi commented on a diff in the pull request:
https://github.com/apache/spark/pull/20807#discussion_r174983449
--- Diff:
resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/ApplicationMaster.scala
---
@@ -417,8 +417,11 @@ private[spark] class ApplicationMaster(args:
ApplicationMasterArguments) extends
}
}
- private def sparkContextInitialized(sc: SparkContext) = {
+ private def sparkContextInitialized(sc: SparkContext) = synchronized {
--- End diff --
Used `sparkContextPromise` as lock.
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