Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/5432#discussion_r28919320
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/SchedulerBackend.scala ---
@@ -41,4 +41,11 @@ private[spark] trait SchedulerBackend {
*/
def applicationId(): String = appId
+ /**
+ * Get an application ID associated with the job.
+ *
+ * @return An application attempt id
+ */
+ def applicationAttemptId(): String = ""
--- End diff --
Yeah, I went back and forth on this bug forgot to revisit the code. I agree
that `Option` would be better here, let me see how big a change that would be.
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