ColumnStat

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. val KEY_VERSION: String

   

5. final def asInstanceOf[T0]: T0

   

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6. def clone(): AnyRef

   

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

   

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8. def equals(arg0: Any): Boolean

   

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9. def finalize(): Unit

   

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10. def fromMap(table: String, field: StructField, map: Map[String, String]): Option[ColumnStat]

    

    Creates a ColumnStat object from the given map.

    Creates a ColumnStat object from the given map. This is used to deserialize column stats from some external storage. The serialization side is defined in ColumnStat.toMap.

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

    

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12. def hashCode(): Int

    

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13. def initializeLogIfNecessary(isInterpreter: Boolean): Unit

    

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14. final def isInstanceOf[T0]: Boolean

    

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15. def isTraceEnabled(): Boolean

    

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16. def log: Logger

    

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17. def logDebug(msg: ⇒ String, throwable: Throwable): Unit

    

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18. def logDebug(msg: ⇒ String): Unit

    

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19. def logError(msg: ⇒ String, throwable: Throwable): Unit

    

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20. def logError(msg: ⇒ String): Unit

    

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21. def logInfo(msg: ⇒ String, throwable: Throwable): Unit

    

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22. def logInfo(msg: ⇒ String): Unit

    

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23. def logName: String

    

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24. def logTrace(msg: ⇒ String, throwable: Throwable): Unit

    

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25. def logTrace(msg: ⇒ String): Unit

    

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26. def logWarning(msg: ⇒ String, throwable: Throwable): Unit

    

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27. def logWarning(msg: ⇒ String): Unit

    

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

    

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29. final def notify(): Unit

    

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30. final def notifyAll(): Unit

    

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31. def rowToColumnStat(row: Row, attr: Attribute): ColumnStat

    

    Convert a struct for column stats (defined in statExprs) into ColumnStat.

32. def statExprs(col: Attribute, relativeSD: Double): CreateNamedStruct

    

    Constructs an expression to compute column statistics for a given column.

    Constructs an expression to compute column statistics for a given column.

    The expression should create a single struct column with the following schema: distinctCount: Long, min: T, max: T, nullCount: Long, avgLen: Long, maxLen: Long

    Together with rowToColumnStat, this function is used to create ColumnStat and as a result should stay in sync with it.

33. def supportsType(dataType: DataType): Boolean

    

    Returns true iff the we support gathering column statistics on column of the given type.

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

    

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35. def toString(): String

    

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36. final def wait(): Unit

    

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

    

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

    

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