| /** |
| * 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.task; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.mapred.Task; |
| import org.apache.hadoop.mapreduce.Counter; |
| import org.apache.hadoop.mapreduce.Counters; |
| import org.apache.hadoop.mapreduce.StatusReporter; |
| import org.apache.hadoop.mapreduce.TaskAttemptContext; |
| import org.apache.hadoop.mapreduce.TaskAttemptID; |
| |
| /** |
| * The context for task attempts. |
| */ |
| @InterfaceAudience.Private |
| @InterfaceStability.Unstable |
| public class TaskAttemptContextImpl extends JobContextImpl |
| implements TaskAttemptContext { |
| private final TaskAttemptID taskId; |
| private String status = ""; |
| private StatusReporter reporter; |
| |
| public TaskAttemptContextImpl(Configuration conf, |
| TaskAttemptID taskId) { |
| this(conf, taskId, new DummyReporter()); |
| } |
| |
| public TaskAttemptContextImpl(Configuration conf, |
| TaskAttemptID taskId, StatusReporter reporter) { |
| super(conf, taskId.getJobID()); |
| this.taskId = taskId; |
| this.reporter = reporter; |
| } |
| |
| /** |
| * Get the unique name for this task attempt. |
| */ |
| public TaskAttemptID getTaskAttemptID() { |
| return taskId; |
| } |
| |
| /** |
| * Get the last set status message. |
| * @return the current status message |
| */ |
| public String getStatus() { |
| return status; |
| } |
| |
| @Override |
| public Counter getCounter(Enum<?> counterName) { |
| return reporter.getCounter(counterName); |
| } |
| |
| @Override |
| public Counter getCounter(String groupName, String counterName) { |
| return reporter.getCounter(groupName, counterName); |
| } |
| |
| /** |
| * Report progress. |
| */ |
| @Override |
| public void progress() { |
| reporter.progress(); |
| } |
| |
| protected void setStatusString(String status) { |
| this.status = status; |
| } |
| |
| /** |
| * Set the current status of the task to the given string. |
| */ |
| @Override |
| public void setStatus(String status) { |
| String normalizedStatus = Task.normalizeStatus(status, conf); |
| setStatusString(normalizedStatus); |
| reporter.setStatus(normalizedStatus); |
| } |
| |
| public static class DummyReporter extends StatusReporter { |
| public void setStatus(String s) { |
| } |
| public void progress() { |
| } |
| public Counter getCounter(Enum<?> name) { |
| return new Counters().findCounter(name); |
| } |
| public Counter getCounter(String group, String name) { |
| return new Counters().findCounter(group, name); |
| } |
| public float getProgress() { |
| return 0f; |
| } |
| } |
| |
| @Override |
| public float getProgress() { |
| return reporter.getProgress(); |
| } |
| } |