Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/23025#discussion_r234103200 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala --- @@ -2789,6 +2789,12 @@ class Dataset[T] private[sql]( * When no explicit sort order is specified, "ascending nulls first" is assumed. * Note, the rows are not sorted in each partition of the resulting Dataset. * + * + * [SPARK-26024] Note that due to performance reasons this method uses sampling to --- End diff -- ditto.
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