case class MomentAggState(count: Long = 0, min: Double = 0, max: Double = 0, mean: Double = 0, m2: Double = 0) extends Product with Serializable

The state necessary for maintaining moment based aggregations, currently only supported up to m2.

This functionality is based on the org.apache.spark.sql.catalyst.expressions.aggregate.CentralMomentAgg implementation in Spark and is used to compute summary statistics on arrays as well across many rows for sample based aggregations.

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Serializable, Serializable, Product, Equals, AnyRef, Any
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  1. MomentAggState
  2. Serializable
  3. Serializable
  4. Product
  5. Equals
  6. AnyRef
  7. Any
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Instance Constructors

  1. new MomentAggState()
  2. new MomentAggState(count: Long = 0, min: Double = 0, max: Double = 0, mean: Double = 0, m2: Double = 0)

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. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )
  6. var count: Long
  7. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  8. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  9. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  10. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  11. var m2: Double
  12. var max: Double
  13. var mean: Double
  14. var min: Double
  15. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  16. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  17. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  18. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  19. def toInternalRow: InternalRow
  20. def toInternalRow(row: InternalRow, offset: Int = 0): InternalRow

    Writes the mean, stdev, min, and max into the input row beginning at the provided offset.

  21. def update(element: Float): Unit
  22. def update(element: Int): Unit
  23. def update(element: Long): Unit
  24. def update(element: Double): Unit
  25. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  26. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  27. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )

Inherited from Serializable

Inherited from Serializable

Inherited from Product

Inherited from Equals

Inherited from AnyRef

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