Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/16854#discussion_r100667530 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/DataFrameReader.scala --- @@ -361,6 +362,41 @@ class DataFrameReader private[sql](sparkSession: SparkSession) extends Logging { } /** + * Loads an `Dataset[String]` storing CSV rows and returns the result as a `DataFrame`. + * + * Unless the schema is specified using `schema` function, this function goes through the + * input once to determine the input schema. + * + * @param csvDataset input Dataset with one CSV row per record + * @since 2.2.0 + */ + def csv(csvDataset: Dataset[String]): DataFrame = { --- End diff -- Sure. Actually, there is a JIRA and closed PR https://github.com/apache/spark/pull/13460 and [SPARK-15615](https://issues.apache.org/jira/browse/SPARK-15615) where I was negative because it can be easily worked around. However, I am fine if we are promoting to use datasets instead of RDDs for some advantages such as [SPARK-18362](https://issues.apache.org/jira/browse/SPARK-18362). cc @pjfanning, could you reopen and proceed your PR if we are all fine?
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