Class

org.apache.spark.sql.execution

StratumReservoir

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class StratumReservoir extends DataSerializable with Sizeable with Serializable

For each stratum (i.e. a unique set of values for QCS), keep a set of meta-data including number of samples collected, total number of rows in the stratum seen so far, the QCS key, reservoir of samples etc.

Self Type
StratumReservoir
Linear Supertypes
Serializable, Sizeable, DataSerializable, Serializable, AnyRef, Any
Known Subclasses
StratumCache
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Inherited
  1. StratumReservoir
  2. Serializable
  3. Sizeable
  4. DataSerializable
  5. Serializable
  6. AnyRef
  7. Any
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Visibility
  1. Public
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Instance Constructors

  1. new StratumReservoir()

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  2. new StratumReservoir(reservoir: Array[UnsafeRow], reservoirSize: Int, batchTotalSize: Int)

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Value Members

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

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    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

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    Definition Classes
    AnyRef → Any

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

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    Definition Classes
    AnyRef → Any

  4. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any

  5. final var batchTotalSize: Int

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  6. final def calculateWeightageColumn(): Long

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  7. def clone(): AnyRef

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

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

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    Definition Classes
    AnyRef

  9. def equals(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  10. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

  11. def fromData(in: DataInput): Unit

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    Definition Classes
    StratumReservoir → DataSerializable

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

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    Definition Classes
    AnyRef → Any

  13. def getSizeInBytes(): Int

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    Definition Classes
    StratumReservoir → Sizeable

  14. def hashCode(): Int

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    Definition Classes
    AnyRef → Any

  15. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any

  16. final def iterator(prevReservoirSize: Int, newReservoirSize: Int, columns: Int, doReset: Boolean, fullReset: Boolean, useWrapper: Boolean = false): Iterator[InternalRow]

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

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    Definition Classes
    AnyRef

  18. final def notify(): Unit

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    Definition Classes
    AnyRef

  19. final def notifyAll(): Unit

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    Definition Classes
    AnyRef

  20. def numSamples: Int

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  21. final var reservoir: Array[UnsafeRow]

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  22. final var reservoirSize: Int

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  23. def reset(prevReservoirSize: Int, newReservoirSize: Int, fullReset: Boolean): Unit

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

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    Definition Classes
    AnyRef

  25. def toData(out: DataOutput): Unit

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    Definition Classes
    StratumReservoir → DataSerializable

  26. def toString(): String

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    Definition Classes
    AnyRef → Any

  27. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
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    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from Serializable

Inherited from Sizeable

Inherited from DataSerializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

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