Enum RowKeyJoin.RowKeyJoinState

java.lang.Object
java.lang.Enum<RowKeyJoin.RowKeyJoinState>
org.apache.drill.exec.physical.impl.join.RowKeyJoin.RowKeyJoinState
All Implemented Interfaces:
Serializable, Comparable<RowKeyJoin.RowKeyJoinState>
Enclosing interface:
RowKeyJoin

public static enum RowKeyJoin.RowKeyJoinState extends Enum<RowKeyJoin.RowKeyJoinState>
Enum for RowKeyJoin internal state. Possible states are {INITIAL, PROCESSING, DONE} Initially RowKeyJoin will be at INITIAL state. Then the state will be transitioned by the RestrictedJsonRecordReader to PROCESSING as soon as it processes the rows related to RowKeys. Then RowKeyJoin algorithm sets to INITIAL state when leftStream has no data. Basically RowKeyJoin calls leftStream multiple times depending upon the rightStream, hence this transition from PROCESSING to INITIAL. If there is no data from rightStream or OutOfMemory condition then the state is transitioned to DONE.
  • Enum Constant Details

  • Method Details

    • values

      public static RowKeyJoin.RowKeyJoinState[] values()
      Returns an array containing the constants of this enum type, in the order they are declared.
      Returns:
      an array containing the constants of this enum type, in the order they are declared
    • valueOf

      public static RowKeyJoin.RowKeyJoinState valueOf(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:
      IllegalArgumentException - if this enum type has no constant with the specified name
      NullPointerException - if the argument is null