Package org.apache.hadoop.mapreduce.v2.api.records

Class TaskAttemptId

java.lang.Object
org.apache.hadoop.mapreduce.v2.api.records.TaskAttemptId
All Implemented Interfaces:
Comparable<TaskAttemptId>
Direct Known Subclasses:
TaskAttemptIdPBImpl
public abstract class TaskAttemptId extends Object implements Comparable<TaskAttemptId>

TaskAttemptId represents the unique identifier for a task attempt. Each task attempt is one particular instance of a Map or Reduce Task identified by its TaskId.

TaskAttemptId consists of 2 parts. First part is the TaskId, that this TaskAttemptId belongs to. Second part is the task attempt number.

  • Field Details

  • Constructor Details

    • TaskAttemptId

      public TaskAttemptId()

  • Method Details

    • getTaskId

      public abstract TaskId getTaskId()
      Returns:
      the associated TaskId.

    • getId

      public abstract int getId()
      Returns:
      the attempt id.

    • setTaskId

      public abstract void setTaskId(TaskId taskId)

    • setId

      public abstract void setId(int id)

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • equals

      public boolean equals(Object obj)
      Overrides:
      equals in class Object

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • compareTo

      public int compareTo(TaskAttemptId other)
      Specified by:
      compareTo in interface Comparable<TaskAttemptId>