Github user kayousterhout commented on a diff in the pull request: https://github.com/apache/spark/pull/14079#discussion_r86601927 --- Diff: core/src/main/scala/org/apache/spark/scheduler/TaskSchedulerImpl.scala --- @@ -584,6 +614,14 @@ private[spark] class TaskSchedulerImpl( executorIdToTaskCount.getOrElse(execId, -1) > 0 } + /** + * Get a snapshot of the currently blacklisted nodes for the entire application. This is + * thread-safe -- it can be called without a lock on the TaskScheduler. + */ + def nodeBlacklist(): scala.collection.immutable.Set[String] = { --- End diff -- can this be the other more general scala.collection.Set that's already imported in this file? Below, instead of scala.collection.immutable.Set(), you can do Set.empty[String]
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