Value Members

1.  final def !=(arg0: Any): Boolean

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2.  final def ##(): Int

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3.  final def ==(arg0: Any): Boolean

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4.  final def asInstanceOf[T0]: T0

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5.  def ceil(bigDecimal: BigDecimal): BigInt
6.  def clone(): AnyRef

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7.  def columnStatsExist(statsAndAttr: (Statistics, Attribute)*): Boolean

   Check if each attribute has column stat in the corresponding statistics.

8.  def columnStatsWithCountsExist(statsAndAttr: (Statistics, Attribute)*): Boolean

   Check if each attribute has column stat containing distinct and null counts in the corresponding statistic.

9.  final def eq(arg0: AnyRef): Boolean

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10.  def equals(arg0: Any): Boolean

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11.  def finalize(): Unit

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12.  def fromDouble(double: Double, dataType: DataType): Any
13.  def getAliasStats(expressions: Seq[Expression], attributeStats: AttributeMap[ColumnStat]): Seq[(Attribute, ColumnStat)]

    Returns the stats for aliases of child's attributes

14.  final def getClass(): Class[_]

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15.  def getOutputMap(inputMap: AttributeMap[ColumnStat], output: Seq[Attribute]): AttributeMap[ColumnStat]

    Get column stats for output attributes.

16.  def getOutputSize(attributes: Seq[Attribute], outputRowCount: BigInt, attrStats: AttributeMap[ColumnStat] = AttributeMap(Nil)): BigInt
17.  def getOverlappedRanges(leftHistogram: Histogram, rightHistogram: Histogram, lowerBound: Double, upperBound: Double): Seq[OverlappedRange]

    Returns overlapped ranges between two histograms, in the given value range [lowerBound, upperBound].

18.  def getSizePerRow(attributes: Seq[Attribute], attrStats: AttributeMap[ColumnStat] = AttributeMap(Nil)): BigInt
19.  def hashCode(): Int

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20.  final def isInstanceOf[T0]: Boolean

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21.  final def ne(arg0: AnyRef): Boolean

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22.  final def notify(): Unit

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23.  final def notifyAll(): Unit

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24.  def nullColumnStat(dataType: DataType, rowCount: BigInt): ColumnStat

    Statistics for a Column containing only NULLs.

25.  def numBinsHoldingRange(upperBound: Double, upperBoundInclusive: Boolean, lowerBound: Double, lowerBoundInclusive: Boolean, bins: Array[HistogramBin]): Double

    Returns the number of histogram bins holding values within the given range [lowerBound, upperBound].

    Returns the number of histogram bins holding values within the given range [lowerBound, upperBound].

    Note that the returned value is double type, because the range boundaries usually occupy a portion of a bin. An extreme case is [value, value] which is generated by equal predicate col = value, we can get higher accuracy by allowing returning portion of histogram bins.

    upperBound

    the highest value of the given range

    upperBoundInclusive

    whether the upperBound is included in the range

    lowerBound

    the lowest value of the given range

    lowerBoundInclusive

    whether the lowerBound is included in the range

    bins

    an array of bins for a given numeric equi-height histogram

26.  def rowCountsExist(plans: LogicalPlan*): Boolean

    Check if each plan has rowCount in its statistics.

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

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28.  def toDouble(value: Any, dataType: DataType): Double

    For simplicity we use Double to unify operations for data types whose min/max values can be represented as numbers, e.g.

    For simplicity we use Double to unify operations for data types whose min/max values can be represented as numbers, e.g. Boolean can be represented as 0 (false) or 1 (true). The two methods below are the contract of conversion.

29.  def toString(): String

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30.  def trimBin(bin: HistogramBin, height: Double, lowerBound: Double, upperBound: Double): (HistogramBin, Double)

    Given an original bin and a value range [lowerBound, upperBound], returns the trimmed part of the bin in that range and its number of rows.

    Given an original bin and a value range [lowerBound, upperBound], returns the trimmed part of the bin in that range and its number of rows.

    bin

    the input histogram bin.

    height

    the number of rows of the given histogram bin inside an equi-height histogram.

    lowerBound

    lower bound of the given range.

    upperBound

    upper bound of the given range.

    returns

    trimmed part of the given bin and its number of rows.

31.  def updateNdv(oldNumRows: BigInt, newNumRows: BigInt, oldNdv: BigInt): BigInt

    Updates (scales down) the number of distinct values if the number of rows decreases after some operation (such as filter, join).

    Updates (scales down) the number of distinct values if the number of rows decreases after some operation (such as filter, join). Otherwise keep it unchanged.

32.  final def wait(): Unit

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

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    @throws( ... )

34.  final def wait(arg0: Long): Unit

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