Github user witgo commented on a diff in the pull request:
https://github.com/apache/spark/pull/17882#discussion_r121972913
--- Diff:
resource-managers/yarn/src/main/scala/org/apache/spark/scheduler/cluster/YarnSchedulerBackend.scala
---
@@ -176,16 +179,6 @@ private[spark] abstract class YarnSchedulerBackend(
}
/**
- * Reset the state of SchedulerBackend to the initial state. This is
happened when AM is failed
- * and re-registered itself to driver after a failure. The stale state
in driver should be
- * cleaned.
- */
- override protected def reset(): Unit = {
--- End diff --
I think `ExecutorAllocationManager#reset` is still necessary, but the
following code should be removed
```scala
initializing = true
numExecutorsTarget = initialNumExecutors
numExecutorsToAdd = 1
```
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