com.twitter.scalding.typed.CumulativeSum

CumulativeSumExtension

class CumulativeSumExtension[K, U, V] extends AnyRef

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Instance Constructors

  1. new CumulativeSumExtension(pipe: TypedPipe[(K, (U, V))])

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  1. final def !=(arg0: AnyRef): Boolean

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  2. final def !=(arg0: Any): Boolean

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  4. final def ==(arg0: AnyRef): Boolean

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  7. def clone(): AnyRef

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  8. def cumulativeSum[S](partition: (U) ⇒ S)(implicit ordS: Ordering[S], sg: Semigroup[V], ordU: Ordering[U], ordK: Ordering[K]): TypedPipe[(K, (U, V))]

    An optimization of cumulativeSum for cases when a particular key has many entries.

    An optimization of cumulativeSum for cases when a particular key has many entries. Requires a sortable partitioning of U. Accomplishes the optimization by not requiring all the entries for a single key to go through a single scan. Instead requires the sums of the partitions for a single key to go through a single scan.

  9. def cumulativeSum(implicit sg: Semigroup[V], ordU: Ordering[U], ordK: Ordering[K]): SortedGrouped[K, (U, V)]

    Takes a sortable field and a monoid and returns the cumulative sum of that monoid *

  10. final def eq(arg0: AnyRef): Boolean

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  11. def equals(arg0: Any): Boolean

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  12. def finalize(): Unit

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  13. final def getClass(): Class[_]

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  15. final def isInstanceOf[T0]: Boolean

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  16. final def ne(arg0: AnyRef): Boolean

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  17. final def notify(): Unit

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  18. final def notifyAll(): Unit

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  19. val pipe: TypedPipe[(K, (U, V))]

  20. final def synchronized[T0](arg0: ⇒ T0): T0

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  21. def toString(): String

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  23. final def wait(arg0: Long, arg1: Int): Unit

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  24. final def wait(arg0: Long): Unit

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