cloud-fan commented on a change in pull request #29461:
URL: https://github.com/apache/spark/pull/29461#discussion_r486036511
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File path: sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala
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@@ -3131,8 +3131,12 @@ class Dataset[T] private[sql](
* Returns a new Dataset that contains only the unique rows from this
Dataset.
* This is an alias for `dropDuplicates`.
*
+ * Note that for a streaming [[Dataset]], this method only returns distinct
rows only once
Review comment:
`only returns distinct rows only once` -> `returns distinct rows only
once`
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