Github user jsoltren commented on a diff in the pull request: https://github.com/apache/spark/pull/16650#discussion_r97622417 --- Diff: core/src/main/scala/org/apache/spark/scheduler/TaskSchedulerImpl.scala --- @@ -719,7 +719,11 @@ private[spark] object TaskSchedulerImpl { private def maybeCreateBlacklistTracker(sc: SparkContext): Option[BlacklistTracker] = { if (BlacklistTracker.isBlacklistEnabled(sc.conf)) { - Some(new BlacklistTracker(sc)) + val executorAllocClient: Option[ExecutorAllocationClient] = sc.schedulerBackend match { + case b: ExecutorAllocationClient => Some(b.asInstanceOf[ExecutorAllocationClient]) --- End diff -- ...I didn't realize we got a free type cast with the case match. Neat. Fixed.
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