Enum FirstPollOffsetStrategy

java.lang.Object
java.lang.Enum<FirstPollOffsetStrategy>
org.apache.storm.kafka.spout.FirstPollOffsetStrategy
All Implemented Interfaces:
Serializable, Comparable<FirstPollOffsetStrategy>, java.lang.constant.Constable

public enum FirstPollOffsetStrategy extends Enum<FirstPollOffsetStrategy>
Defines how the spout seeks the offset to be used in the first poll to Kafka upon topology deployment. By default this parameter is set to UNCOMMITTED_EARLIEST.
  • Enum Constant Details

    • EARLIEST

      public static final FirstPollOffsetStrategy EARLIEST
      The kafka spout polls records starting in the first offset of the partition, regardless of previous commits. This setting only takes effect on topology deployment
    • LATEST

      public static final FirstPollOffsetStrategy LATEST
      The kafka spout polls records starting at the end of the partition, regardless of previous commits. This setting only takes effect on topology deployment
    • TIMESTAMP

      public static final FirstPollOffsetStrategy TIMESTAMP
      The kafka spout polls records starting at the earliest offset whose timestamp is greater than or equal to the given startTimestamp. This setting only takes effect on topology deployment. This option is currently available only for the Trident Spout
    • UNCOMMITTED_EARLIEST

      public static final FirstPollOffsetStrategy UNCOMMITTED_EARLIEST
      The kafka spout polls records from the last committed offset, if any. If no offset has been committed it behaves as EARLIEST
    • UNCOMMITTED_LATEST

      public static final FirstPollOffsetStrategy UNCOMMITTED_LATEST
      The kafka spout polls records from the last committed offset, if any. If no offset has been committed it behaves as LATEST
    • UNCOMMITTED_TIMESTAMP

      public static final FirstPollOffsetStrategy UNCOMMITTED_TIMESTAMP
      The kafka spout polls records from the last committed offset, if any. If no offset has been committed it behaves as TIMESTAMP. This option is currently available only for the Trident Spout
  • Method Details

    • values

      public static FirstPollOffsetStrategy[] 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 FirstPollOffsetStrategy 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