kotlin-spark-api_3.0.2_2.12/org.jetbrains.kotlinx.spark.api/Aggregator

Aggregator

class Aggregator<IN, BUF, OUT>( zero: () -> BUF, reduce: (b: BUF, a: IN) -> BUF, merge: (b1: BUF, b2: BUF) -> BUF, finish: (reduction: BUF) -> OUT, bufferEncoder: <Error class: unknown class><BUF>, outputEncoder: <Error class: unknown class><OUT>) : Serializable

Constructors

Aggregator

fun <IN, BUF, OUT> Aggregator( zero: () -> BUF, reduce: (b: BUF, a: IN) -> BUF, merge: (b1: BUF, b2: BUF) -> BUF, finish: (reduction: BUF) -> OUT, bufferEncoder: <Error class: unknown class><BUF>, outputEncoder: <Error class: unknown class><OUT>)

Functions

bufferEncoder

open fun bufferEncoder(): <Error class: unknown class><BUF>

finish

open fun finish(reduction: BUF): OUT

merge

open fun merge(b1: BUF, b2: BUF): BUF

outputEncoder

open fun outputEncoder(): <Error class: unknown class><OUT>

reduce

open fun reduce(b: BUF, a: IN): BUF

zero

open fun zero(): BUF