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Takeshi Yamamuro commented on SPARK-22152: ------------------------------------------ `Dataset[Option[T]]` is used in a natural usecase? Usually, we can use null instead to represent if it exists or not? {code} scala> case class Data(a: Option[Int]) defined class Data scala> val ds = Seq(Data(Some(1)), Data(None)).toDS ds: org.apache.spark.sql.Dataset[Data] = [a: int] scala> ds.show +----+ | a| +----+ | 1| |null| +----+ {code} > Add Dataset flatten function > ---------------------------- > > Key: SPARK-22152 > URL: https://issues.apache.org/jira/browse/SPARK-22152 > Project: Spark > Issue Type: New Feature > Components: SQL > Affects Versions: 2.2.0 > Reporter: Drew Robb > Priority: Minor > > Currently you can use an identify flatMap to flatten a Dataset, for example > to get from a Dataset[Option[T]] to a Dataset[T], but adding flatten directly > would allow for a more similar API to scala collections. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org