Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/23183#discussion_r238014562 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/QueryPlanningTracker.scala --- @@ -51,6 +58,18 @@ object QueryPlanningTracker { } } + /** + * Summary of a phase, with start time and end time so we can construct a timeline. + */ + class PhaseSummary(val startTimeMs: Long, val endTimeMs: Long) { + + def durationMs: Long = endTimeMs - startTimeMs + + override def toString: String = { + s"PhaseSummary($startTimeMs, $endTimeMs)" --- End diff -- Also include the duration in toString?
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