> > Also, while extracting a value into Dataset using as[U] method, how could > I specify a custom encoder/translation to case class (where I don't have > the same column-name mapping or same data-type mapping)? >
There is no public API yet for defining your own encoders. You change the
column names using select and as to make sure they line up correctly.
df.select($"oldName".as("newName"))
