Github user JoshRosen commented on a diff in the pull request: https://github.com/apache/spark/pull/10835#discussion_r50786156 --- Diff: core/src/main/scala/org/apache/spark/TaskEndReason.scala --- @@ -115,22 +118,34 @@ case class ExceptionFailure( description: String, stackTrace: Array[StackTraceElement], fullStackTrace: String, - metrics: Option[TaskMetrics], - private val exceptionWrapper: Option[ThrowableSerializationWrapper]) + exceptionWrapper: Option[ThrowableSerializationWrapper], + accumUpdates: Seq[AccumulableInfo] = Seq.empty[AccumulableInfo]) extends TaskFailedReason { + // For backward compatibility; this was replaced with `accumUpdates` in Spark 2.0. + val metrics: Option[TaskMetrics] = { + if (accumUpdates.nonEmpty) { --- End diff -- I appreciate that you didn't try to cram this all into a dense confusing one-liner :+1:
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