| /** |
| * 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.app.job; |
| |
| import java.util.Map; |
| |
| import org.apache.hadoop.mapreduce.v2.api.records.Counters; |
| import org.apache.hadoop.mapreduce.v2.api.records.TaskAttemptId; |
| import org.apache.hadoop.mapreduce.v2.api.records.TaskId; |
| import org.apache.hadoop.mapreduce.v2.api.records.TaskReport; |
| import org.apache.hadoop.mapreduce.v2.api.records.TaskState; |
| import org.apache.hadoop.mapreduce.v2.api.records.TaskType; |
| |
| /** |
| * Read only view of Task. |
| */ |
| public interface Task { |
| TaskId getID(); |
| TaskReport getReport(); |
| TaskState getState(); |
| Counters getCounters(); |
| float getProgress(); |
| TaskType getType(); |
| Map<TaskAttemptId, TaskAttempt> getAttempts(); |
| TaskAttempt getAttempt(TaskAttemptId attemptID); |
| |
| /** Has Task reached the final state or not. |
| */ |
| boolean isFinished(); |
| |
| /** |
| * Can the output of the taskAttempt be committed. Note that once the task |
| * gives a go for a commit, further canCommit requests from any other attempts |
| * should return false. |
| * |
| * @param taskAttemptID |
| * @return whether the attempt's output can be committed or not. |
| */ |
| boolean canCommit(TaskAttemptId taskAttemptID); |
| |
| |
| } |
