Enum DistributionMode

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Comparable<DistributionMode>

    public enum DistributionMode
    extends java.lang.Enum<DistributionMode>
    Enum of supported write distribution mode, it defines the write behavior of batch or streaming job:

    1. none: don't shuffle rows. It is suitable for scenarios where the rows are located in only few partitions, otherwise that may produce too many small files because each task is writing rows into different partitions randomly.

    2. hash: hash distribute by partition key, which is suitable for the scenarios where the rows are located into different partitions evenly.

    3. range: range distribute by partition key (or sort key if table has an SortOrder), which is suitable for the scenarios where rows are located into different partitions with skew distribution.

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description
      HASH  
      NONE  
      RANGE  
    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      static DistributionMode fromName​(java.lang.String modeName)  
      java.lang.String modeName()  
      static DistributionMode valueOf​(java.lang.String name)
      Returns the enum constant of this type with the specified name.
      static DistributionMode[] values()
      Returns an array containing the constants of this enum type, in the order they are declared.
      • Methods inherited from class java.lang.Enum

        clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf
      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait
    • Method Detail

      • values

        public static DistributionMode[] values()
        Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
        for (DistributionMode c : DistributionMode.values())
            System.out.println(c);
        
        Returns:
        an array containing the constants of this enum type, in the order they are declared
      • valueOf

        public static DistributionMode valueOf​(java.lang.String name)
        Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
        Parameters:
        name - the name of the enum constant to be returned.
        Returns:
        the enum constant with the specified name
        Throws:
        java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
        java.lang.NullPointerException - if the argument is null
      • modeName

        public java.lang.String modeName()
      • fromName

        public static DistributionMode fromName​(java.lang.String modeName)