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c

org.apache.spark

ShuffleDependency

class ShuffleDependency[K, V, C] extends Dependency[Product2[K, V]]

:: DeveloperApi :: Represents a dependency on the output of a shuffle stage. Note that in the case of shuffle, the RDD is transient since we don't need it on the executor side.

Annotations
@DeveloperApi()
Source
Dependency.scala
Linear Supertypes
Dependency[Product2[K, V]], Serializable, Serializable, AnyRef, Any
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Inherited
  1. ShuffleDependency
  2. Dependency
  3. Serializable
  4. Serializable
  5. AnyRef
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Visibility
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Instance Constructors

  1. new ShuffleDependency(_rdd: RDD[_ <: Product2[K, V]], partitioner: Partitioner, serializer: Serializer = SparkEnv.get.serializer, keyOrdering: Option[Ordering[K]] = None, aggregator: Option[Aggregator[K, V, C]] = None, mapSideCombine: Boolean = false, shuffleWriterProcessor: ShuffleWriteProcessor = new ShuffleWriteProcessor)(implicit arg0: ClassTag[K], arg1: ClassTag[V], arg2: ClassTag[C])

    _rdd

    the parent RDD

    partitioner

    partitioner used to partition the shuffle output

    serializer

    Serializer to use. If not set explicitly then the default serializer, as specified by spark.serializer config option, will be used.

    keyOrdering

    key ordering for RDD's shuffles

    aggregator

    map/reduce-side aggregator for RDD's shuffle

    mapSideCombine

    whether to perform partial aggregation (also known as map-side combine)

    shuffleWriterProcessor

    the processor to control the write behavior in ShuffleMapTask

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. val aggregator: Option[Aggregator[K, V, C]]
  5. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  6. def clone(): AnyRef
    Attributes
    protected[lang]
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    @throws( ... ) @native()
  7. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  8. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  9. def finalize(): Unit
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    protected[lang]
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    @throws( classOf[java.lang.Throwable] )
  10. final def getClass(): Class[_]
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    @native()
  11. def hashCode(): Int
    Definition Classes
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    @native()
  12. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  13. val keyOrdering: Option[Ordering[K]]
  14. val mapSideCombine: Boolean
  15. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  16. final def notify(): Unit
    Definition Classes
    AnyRef
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    @native()
  17. final def notifyAll(): Unit
    Definition Classes
    AnyRef
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    @native()
  18. val partitioner: Partitioner
  19. def rdd: RDD[Product2[K, V]]
    Definition Classes
    ShuffleDependency → Dependency
  20. val serializer: Serializer
  21. val shuffleHandle: ShuffleHandle
  22. val shuffleId: Int
  23. val shuffleWriterProcessor: ShuffleWriteProcessor
  24. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  25. def toString(): String
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  26. final def wait(): Unit
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    @throws( ... )
  27. final def wait(arg0: Long, arg1: Int): Unit
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    @throws( ... )
  28. final def wait(arg0: Long): Unit
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    @throws( ... ) @native()

Inherited from Dependency[Product2[K, V]]

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

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