Github user kayousterhout commented on a diff in the pull request:
https://github.com/apache/spark/pull/16855#discussion_r100187114
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/TaskSetManager.scala ---
@@ -874,7 +874,8 @@ private[spark] class TaskSetManager(
// and we are not using an external shuffle server which could serve
the shuffle outputs.
// The reason is the next stage wouldn't be able to fetch the data
from this dead executor
// so we would need to rerun these tasks on other executors.
- if (tasks(0).isInstanceOf[ShuffleMapTask] &&
!env.blockManager.externalShuffleServiceEnabled) {
+ if (tasks(0).isInstanceOf[ShuffleMapTask] &&
!env.blockManager.externalShuffleServiceEnabled
+ && !isZombie) {
--- End diff --
Also I'm concerned that we might need some of the functionality below even
when the TSM is a zombie. While the TSM shouldn't tell the DAGScheduler that
the task was resubmitted, I think it does need to notify the DAGScheduler that
tasks on the executor are finished (otherwise they'll never be marked as
finished in the UI, for example), and I also think it needs to properly update
the running copies of the task.
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