scala> val x = Seq("a", "b").toDF("x")
x: org.apache.spark.sql.DataFrame = [x: string]scala> x.as[Array[Byte]].printSchema root |-- x: string (nullable = true) scala> x.as[Array[Byte]].map(x => x).printSchema root |-- value: binary (nullable = true) why does the first schema show string instead of binary?
