TaskCompletionEvent.Status (Apache Hadoop Main 3.5.0 API)
Description: declaration: package: org.apache.hadoop.mapreduce, class: TaskCompletionEvent, enum: Status

Package org.apache.hadoop.mapreduce

# Enum Class TaskCompletionEvent.Status

java.lang.Object
java.lang.Enum<TaskCompletionEvent.Status>
org.apache.hadoop.mapreduce.TaskCompletionEvent.Status

All Implemented Interfaces:
  `Serializable`, `Comparable<TaskCompletionEvent.Status>`, `Constable`

Enclosing class:
  TaskCompletionEvent

@Public @Evolving public static enum TaskCompletionEvent.Status extends Enum<TaskCompletionEvent.Status>

- ## Nested Class Summary

  ## Nested classes/interfaces inherited from class java.lang.Enum

  `Enum.EnumDesc<E extends Enum<E>>`

- ## Enum Constant Summary

  Enum Constants
  Enum Constant
  Description
  `FAILED`
  Task Event Attempt failed but there are attempts remaining.
  `KILLED`
  Task Event was killed.
  `OBSOLETE`
  Used to Override a previously successful event status.
  `SUCCEEDED`
  Task Event was successful.
  `TIPFAILED`
  Task Event attempt failed and no further attempts exist.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `static TaskCompletionEvent.Status`
  `valueOf(String name)`
  Returns the enum constant of this class with the specified name.
  `static TaskCompletionEvent.Status[]`
  `values()`
  Returns an array containing the constants of this enum class, in the order they are declared.

  ### Methods inherited from class java.lang.Enum

  `clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf`

  ### Methods inherited from class java.lang.Object

  `getClass, notify, notifyAll, wait, wait, wait`

- ## Enum Constant Details

  - ### FAILED

    public static final TaskCompletionEvent.Status FAILED
    Task Event Attempt failed but there are attempts remaining.

  - ### KILLED

    public static final TaskCompletionEvent.Status KILLED
    Task Event was killed.

  - ### SUCCEEDED

    public static final TaskCompletionEvent.Status SUCCEEDED
    Task Event was successful.

  - ### OBSOLETE

    public static final TaskCompletionEvent.Status OBSOLETE
    Used to Override a previously successful event status. Example: Map attempt runs and a SUCCEEDED event is sent. Later a task is retroactively failed due to excessive fetch failure during shuffle phase. When the retroactive attempt failure occurs, an OBSOLETE event is sent for the map attempt indicating the prior event is no longer valid.

  - ### TIPFAILED

    public static final TaskCompletionEvent.Status TIPFAILED
    Task Event attempt failed and no further attempts exist. reached MAX attempts. When a reducer receives a TIPFAILED event it gives up trying to shuffle data from that map task.

- ## Method Details

  - ### values

    public static TaskCompletionEvent.Status[] values()
    Returns an array containing the constants of this enum class, in the order they are declared.
    Returns:
      an array containing the constants of this enum class, in the order they are declared

  - ### valueOf

    public static TaskCompletionEvent.Status valueOf(String name)
    Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (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 class has no constant with the specified name
      `NullPointerException` - if the argument is null