def scalding()

in src/main/scala/com/spotify/bdrc/pipeline/MinItemPerUser.scala [30:36]


  def scalding(input: TypedPipe[Rating]): TypedPipe[Rating] = {
    input
      .groupBy(_.user)
      // Reduce items per key by picking the side with lower score for each pair of input
      .reduce((x, y) => if (x.score < y.score) x else y)
      .values
  }