Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/7786#discussion_r40483975
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/cluster/CoarseGrainedSchedulerBackend.scala
---
@@ -449,6 +458,13 @@ class CoarseGrainedSchedulerBackend(scheduler:
TaskSchedulerImpl, val rpcEnv: Rp
*/
protected def doKillExecutors(executorIds: Seq[String]): Boolean = false
+ /**
+ * Executor ids which will possibly be preempted by cluster manager.
+ * @return A set of executor IDs
+ */
+ protected def preemptedExecutors: Set[String] = synchronized {
+ preemptedExecutorIDs.toSet
--- End diff --
Why not store it as a `Set` in the first place? It's not like you're
modifying it.
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