Examples of org.apache.hadoop.mapreduce.TaskID$CharTaskTypeMaps

org.apache.hadoop.mapreduce.TaskID
Maintains the mapping from the character representation of a task type to the enum class TaskType constants

   *          raw {@link TaskAttemptID} read from trace
   * @return masked {@link TaskAttemptID} with empty {@link JobID}.
   */
  private TaskAttemptID maskAttemptID(TaskAttemptID attemptId) {
    JobID jobId = new JobID();
    TaskID taskId = attemptId.getTaskID();
    return new TaskAttemptID(jobId.getJtIdentifier(), jobId.getId(), taskId
        .isMap(), taskId.getId(), attemptId.getId());
  }

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    return taskInfo;
  }


  private TaskAttemptID makeTaskAttemptID(TaskType taskType, int taskNumber,
      int taskAttemptNumber) {
    return new TaskAttemptID(new TaskID(JobID.forName(job.getJobID()),
        taskType==TaskType.MAP, taskNumber), taskAttemptNumber);
  }

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          : State.FAILED;
    }
  }


  private TaskID getMaskedTaskID(TaskType taskType, int taskNumber) {
    return new TaskID(new JobID(), taskType==TaskType.MAP, taskNumber);
  }

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      return;
    }


    Job job = runFailingMapperJob();


    TaskID taskID = new TaskID(job.getJobID(), TaskType.MAP, 0);
    TaskAttemptID aId = new TaskAttemptID(taskID, 0);
    System.out.println("Diagnostics for " + aId + " :");
    for (String diag : job.getTaskDiagnostics(aId)) {
      System.out.println(diag);
    }

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    // segments required to vacate memory
    List<Segment<K,V>> memDiskSegments = new ArrayList<Segment<K,V>>();
    long inMemToDiskBytes = 0;
    boolean mergePhaseFinished = false;
    if (inMemoryMapOutputs.size() > 0) {
      TaskID mapId = inMemoryMapOutputs.get(0).getMapId().getTaskID();
      inMemToDiskBytes = createInMemorySegments(inMemoryMapOutputs, 
                                                memDiskSegments,
                                                maxInMemReduce);
      final int numMemDiskSegments = memDiskSegments.size();
      if (numMemDiskSegments > 0 &&

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      //is called (we delete empty files as soon as we see them
      //in the merge method)


      //figure out the mapId 
      TaskAttemptID mapId = inputs.get(0).getMapId();
      TaskID mapTaskId = mapId.getTaskID();


      List<Segment<K, V>> inMemorySegments = new ArrayList<Segment<K, V>>();
      long mergeOutputSize = 
        createInMemorySegments(inputs, inMemorySegments,0);
      int noInMemorySegments = inMemorySegments.size();

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      return;
    }


    Job job = runFailingMapperJob();


    TaskID taskID = new TaskID(job.getJobID(), TaskType.MAP, 0);
    TaskAttemptID aId = new TaskAttemptID(taskID, 0);
    System.out.println("Diagnostics for " + aId + " :");
    for (String diag : job.getTaskDiagnostics(aId)) {
      System.out.println(diag);
    }

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    }


    Job job = runFailingMapperJob();


    // should be able to get diags for single task attempt...
    TaskID taskID = new TaskID(job.getJobID(), TaskType.MAP, 0);
    TaskAttemptID aId = new TaskAttemptID(taskID, 0);
    System.out.println("Diagnostics for " + aId + " :");
    for (String diag : job.getTaskDiagnostics(aId)) {
      System.out.println(diag);
    }

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   * @return a string like $name-[mrsct]-$id$extension
   */
  public synchronized static String getUniqueFile(TaskAttemptContext context,
                                                  String name,
                                                  String extension) {
    TaskID taskId = context.getTaskAttemptID().getTaskID();
    int partition = taskId.getId();
    StringBuilder result = new StringBuilder();
    result.append(name);
    result.append('-');
    result.append(
        TaskID.getRepresentingCharacter(taskId.getTaskType()));
    result.append('-');
    result.append(NUMBER_FORMAT.format(partition));
    result.append(extension);
    return result.toString();
  }

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   * @return masked {@link TaskID} with empty {@link JobID}.
   */
  private TaskID maskTaskID(TaskID taskId) {
    JobID jobId = new JobID();
    TaskType taskType = taskId.getTaskType();
    return new TaskID(jobId, taskType, taskId.getId());
  }

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