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add .groupWith method to TypedPipe #1406

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Merged
johnynek merged 1 commit into from
Aug 5, 2015
Merged

add .groupWith method to TypedPipe #1406

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3 changes: 3 additions & 0 deletions scalding-core/src/main/scala/com/twitter/scalding/typed/TypedPipe.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -388,6 +388,9 @@ trait TypedPipe[+T] extends Serializable {
def groupBy[K](g: T => K)(implicit ord: Ordering[K]): Grouped[K, T] =
map { t => (g(t), t) }.group

/** Group using an explicit Ordering on the key. */
def groupWith[K, V](ord: Ordering[K])(implicit ev: <:<[T, (K, V)]): Grouped[K, V] = group(ev, ord)

/**
* Forces a shuffle by randomly assigning each item into one
* of the partitions.
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