HyukjinKwon commented on a change in pull request #23727: [SPARK-26817][CORE]
Use System.nanoTime to measure time intervals
URL: https://github.com/apache/spark/pull/23727#discussion_r253342972
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File path: core/src/main/scala/org/apache/spark/MapOutputTracker.scala
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@@ -744,7 +744,7 @@ private[spark] class MapOutputTrackerWorker(conf:
SparkConf) extends MapOutputTr
}
}
logDebug(s"Fetching map output statuses for shuffle $shuffleId took " +
- s"${System.currentTimeMillis - startTime} ms")
+ s"${System.nanoTime() - startTime} ns")
Review comment:
agree with this take.
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