Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/8007#discussion_r39096233
--- Diff: core/src/main/scala/org/apache/spark/TaskEndReason.scala ---
@@ -194,6 +196,12 @@ case object TaskKilled extends TaskFailedReason {
case class TaskCommitDenied(jobID: Int, partitionID: Int, attemptID: Int)
extends TaskFailedReason {
override def toErrorString: String = s"TaskCommitDenied (Driver denied
task commit)" +
s" for job: $jobID, partition: $partitionID, attempt: $attemptID"
+ /**
+ If a task failed because its attempt to commit was denied, do not
count this failure
+ towards failing the stage. This is intended to prevent spurious stage
failures in cases
+ where many speculative tasks are launched and denied to commit.
+ */
--- End diff --
indentation is a little off?
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