Github user andrewor14 commented on a diff in the pull request: https://github.com/apache/spark/pull/3009#discussion_r20665136 --- Diff: core/src/main/scala/org/apache/spark/ui/jobs/UIData.scala --- @@ -40,9 +40,22 @@ private[jobs] object UIData { class JobUIData( var jobId: Int = -1, + var startTime: Option[Long] = None, + var endTime: Option[Long] = None, var stageIds: Seq[Int] = Seq.empty, var jobGroup: Option[String] = None, - var status: JobExecutionStatus = JobExecutionStatus.UNKNOWN + var status: JobExecutionStatus = JobExecutionStatus.UNKNOWN, + /* Tasks */ + // `numTasks` is a potential underestimate of the true number of tasks that this job will run + // see https://github.com/apache/spark/pull/3009 for an extensive discussion of this --- End diff -- as in above, is it possible to provide a 1-line quick summary of why that is the case, and if the reader wants to dig deeper then they can follow the link?
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