spark

NarrowDependency

abstract class NarrowDependency[T] extends Dependency[T]

Base class for dependencies where each partition of the parent RDD is used by at most one partition of the child RDD. Narrow dependencies allow for pipelined execution.

Linear Supertypes
Dependency[T], Serializable, Serializable, AnyRef, Any
Known Subclasses
OneToOneDependency, PruneDependency, RangeDependency
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  1. NarrowDependency
  2. Dependency
  3. Serializable
  4. Serializable
  5. AnyRef
  6. Any
Visibility
  1. Public
  2. All

Instance Constructors

  1. new NarrowDependency(rdd: RDD[T])

Abstract Value Members

  1. abstract def getParents(partitionId: Int): Seq[Int]

    Get the parent partitions for a child partition.

    Get the parent partitions for a child partition.

    partitionId

    a partition of the child RDD

    returns

    the partitions of the parent RDD that the child partition depends upon

Concrete Value Members

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

    Definition Classes
    AnyRef

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

    Definition Classes
    Any

  3. final def ##(): Int

    Definition Classes
    AnyRef → Any

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

    Definition Classes
    AnyRef

  5. final def ==(arg0: Any): Boolean

    Definition Classes
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  6. final def asInstanceOf[T0]: T0

    Definition Classes
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  7. def clone(): AnyRef

    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws()

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

    Definition Classes
    AnyRef

  9. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  10. def finalize(): Unit

    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws()

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

    Definition Classes
    AnyRef → Any

  12. def hashCode(): Int

    Definition Classes
    AnyRef → Any

  13. final def isInstanceOf[T0]: Boolean

    Definition Classes
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  14. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  15. final def notify(): Unit

    Definition Classes
    AnyRef

  16. final def notifyAll(): Unit

    Definition Classes
    AnyRef

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

    Definition Classes
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  18. def toString(): String

    Definition Classes
    AnyRef → Any

  19. final def wait(): Unit

    Definition Classes
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    @throws()

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

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    @throws()

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

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    @throws()

Inherited from Dependency[T]

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any