| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.hadoop.mapreduce.v2.api.records; |
| |
| /** |
| * <p> |
| * <code>TaskAttemptId</code> 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. |
| * </p> |
| * |
| * <p> |
| * TaskAttemptId consists of 2 parts. First part is the <code>TaskId</code>, |
| * that this <code>TaskAttemptId</code> belongs to. Second part is the task |
| * attempt number. |
| * </p> |
| */ |
| public abstract class TaskAttemptId implements Comparable<TaskAttemptId> { |
| /** |
| * @return the associated TaskId. |
| */ |
| public abstract TaskId getTaskId(); |
| |
| /** |
| * @return the attempt id. |
| */ |
| public abstract int getId(); |
| |
| public abstract void setTaskId(TaskId taskId); |
| |
| public abstract void setId(int id); |
| |
| protected static final String TASKATTEMPT = "attempt"; |
| |
| @Override |
| public int hashCode() { |
| final int prime = 31; |
| int result = 1; |
| result = prime * result + getId(); |
| result = |
| prime * result + ((getTaskId() == null) ? 0 : getTaskId().hashCode()); |
| return result; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) |
| return true; |
| if (obj == null) |
| return false; |
| if (getClass() != obj.getClass()) |
| return false; |
| TaskAttemptId other = (TaskAttemptId) obj; |
| if (getId() != other.getId()) |
| return false; |
| if (!getTaskId().equals(other.getTaskId())) |
| return false; |
| return true; |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder builder = new StringBuilder(TASKATTEMPT); |
| TaskId taskId = getTaskId(); |
| builder.append("_").append( |
| taskId.getJobId().getAppId().getClusterTimestamp()); |
| builder.append("_").append( |
| JobId.jobIdFormat.get().format( |
| getTaskId().getJobId().getAppId().getId())); |
| builder.append("_"); |
| builder.append(taskId.getTaskType() == TaskType.MAP ? "m" : "r"); |
| builder.append("_") |
| .append(TaskId.taskIdFormat.get().format(taskId.getId())); |
| builder.append("_"); |
| builder.append(getId()); |
| return builder.toString(); |
| } |
| |
| @Override |
| public int compareTo(TaskAttemptId other) { |
| int taskIdComp = this.getTaskId().compareTo(other.getTaskId()); |
| if (taskIdComp == 0) { |
| return this.getId() - other.getId(); |
| } else { |
| return taskIdComp; |
| } |
| } |
| } |