Aggregator

final def !=(arg0: AnyRef): Boolean

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: AnyRef): Boolean

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def canEqual(arg0: Any): Boolean

def clone(): AnyRef

val createCombiner: (V) ⇒ C

function to create the initial value of the aggregation.

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

final def getClass(): java.lang.Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

val mapSideCombine: Boolean

whether to apply combiners on map partitions, also known as map-side aggregations.

val mergeCombiners: (C, C) ⇒ C

function to merge outputs from multiple mergeValue function.

val mergeValue: (C, V) ⇒ C

function to merge a new value into the aggregation result.

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

def productArity: Int

def productElement(arg0: Int): Any

def productIterator: Iterator[Any]

def productPrefix: String

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

def toString(): String

final def wait(): Unit

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

final def wait(arg0: Long): Unit

def productElements: Iterator[Any]