override def merge()

in src/main/scala/org/apache/spark/sql/datasketches/kll/aggregate/KllDoublesSketchAggMerge.scala [143:154]


  override def merge(union: KllDoublesSketch, other: KllDoublesSketch): KllDoublesSketch = {
    if (union != null && other != null) {
      union.merge(other)
      union
    } else if (union != null && other == null) {
      union
    } else if (union == null && other != null) {
      other
    } else {
      union
    }
  }