Github user mridulm commented on a diff in the pull request: https://github.com/apache/spark/pull/17166#discussion_r106788877 --- Diff: core/src/main/scala/org/apache/spark/TaskEndReason.scala --- @@ -212,8 +212,8 @@ case object TaskResultLost extends TaskFailedReason { * Task was killed intentionally and needs to be rescheduled. */ @DeveloperApi -case object TaskKilled extends TaskFailedReason { - override def toErrorString: String = "TaskKilled (killed intentionally)" +case class TaskKilled(reason: String) extends TaskFailedReason { + override def toErrorString: String = s"TaskKilled ($reason)" --- End diff -- Since this was part of DeveloperApi, what is the impact of making this change ? In JsonProtocol, in mocked user code ? If it does introduce backward incompatible changes, is there a way to mitigate this ? Perhaps make TaskKilled a class with apply/unapply/serde/toString (essentially all that case class provides) and case object with apply with default reason = null (and logged when used as deprecated) ?
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