public interface Reducer
Reducer for numeric values.
  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final Reducer
    Reducer that returns MAX of two values.
    static final Reducer
    Reducer that returns SUM of two values.
  • Method Summary

    Modifier and Type
    Method
    Description
    double
    reduce(double a, double b)
    Double values reducer.
    float
    reduce(float a, float b)
    Float values reducer.
    int
    reduce(int a, int b)
    Int values reducer.
    long
    reduce(long a, long b)
    Long values reducer.
  • Field Details

    • MAX

      static final Reducer MAX
      Reducer that returns MAX of two values.
    • SUM

      static final Reducer SUM
      Reducer that returns SUM of two values.
  • Method Details

    • reduce

      int reduce(int a, int b)
      Int values reducer.
    • reduce

      long reduce(long a, long b)
      Long values reducer.
    • reduce

      float reduce(float a, float b)
      Float values reducer.
    • reduce

      double reduce(double a, double b)
      Double values reducer.