Package org.apache.pinot.segment.spi.creator

Interface ColumnStatistics

  • All Superinterfaces:
    Serializable
    public interface ColumnStatistics
extends Serializable
    An interface to read the column statistics from statistics collectors.

    • Method Detail

      • getMinValue

        Object getMinValue()
        Returns:
        Minimum value of the column

      • getMaxValue

        Object getMaxValue()
        Returns:
        Maximum value of the column

      • getUniqueValuesSet

        Object getUniqueValuesSet()
        Returns:
        An array of elements that has the unique values for this column, sorted order.

      • getCardinality

        int getCardinality()
        Returns:
        The number of unique values of this column.

      • getLengthOfShortestElement

        int getLengthOfShortestElement()
        Returns:
        For variable length objects, returns the length of the shortest value. For others, returns -1.

      • getLengthOfLargestElement

        int getLengthOfLargestElement()
        Returns:
        For variable length objects, returns the length of the longest value. For others, returns -1.

      • isFixedLength

        default boolean isFixedLength()

      • isSorted

        boolean isSorted()
        Whether or not the data in this column is in ascending order.
        Returns:
        true if the data is in ascending order.

      • getTotalNumberOfEntries

        int getTotalNumberOfEntries()
        Returns:
        total number of entries

      • getMaxNumberOfMultiValues

        int getMaxNumberOfMultiValues()
        Returns:
        For multi-valued columns, returns the max number of values in a single occurrence of the column, otherwise 0.

      • getMaxRowLengthInBytes

        default int getMaxRowLengthInBytes()
        Returns:
        the length of the largest row in bytes for variable length types

      • getNumPartitions

        int getNumPartitions()

      • getPartitionFunctionConfig

        Map<String,​String> getPartitionFunctionConfig()