| /** |
| * 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.tez.dag.api; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.hadoop.classification.InterfaceAudience.Public; |
| |
| /** |
| * Describes the placements hints for tasks in a vertex. |
| * The system will make a best-effort attempt to run the tasks |
| * close to the specified locations. |
| */ |
| @Public |
| public class VertexLocationHint { |
| |
| private final List<TaskLocationHint> taskLocationHints; |
| |
| |
| private VertexLocationHint(List<TaskLocationHint> taskLocationHints) { |
| if (taskLocationHints != null) { |
| this.taskLocationHints = Collections.unmodifiableList(taskLocationHints); |
| } else { |
| this.taskLocationHints = null; |
| } |
| } |
| |
| public static VertexLocationHint create( |
| List<TaskLocationHint> taskLocationHints) { |
| return new VertexLocationHint(taskLocationHints); |
| } |
| |
| public List<TaskLocationHint> getTaskLocationHints() { |
| return taskLocationHints; |
| } |
| |
| @Override |
| public int hashCode() { |
| final int prime = 7883; |
| int result = 1; |
| if (taskLocationHints != null) { |
| result = prime * result + taskLocationHints.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; |
| } |
| VertexLocationHint other = (VertexLocationHint) obj; |
| if (taskLocationHints != null) { |
| if (!taskLocationHints.equals(other.taskLocationHints)) { |
| return false; |
| } |
| } else if (other.taskLocationHints != null) { |
| return false; |
| } |
| return true; |
| } |
| } |