Github user mccheah commented on a diff in the pull request:
https://github.com/apache/spark/pull/8007#discussion_r37010534
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/cluster/YarnSchedulerBackend.scala
---
@@ -91,6 +92,51 @@ private[spark] abstract class YarnSchedulerBackend(
}
/**
+ * Override the DriverEndpoint to add extra logic for the case when an
executor is disconnected.
+ * We should check the cluster manager and find if the loss of the
executor was caused by YARN
+ * force killing it due to preemption.
+ */
+ private class YarnDriverEndpoint(rpcEnv: RpcEnv, sparkProperties:
ArrayBuffer[(String, String)])
--- End diff --
Which other endpoint? The YarnSchedulerEndpoint? The main problem is that
onDisconnected events are received at the DriverEndpoint when the executors
exit from preemption. The superclass just removes the executors and marks them
as SlaveLost but I want to override this.
I'll document this accordingly.
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