TaskAttemptContext.java
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上传日期:2018-01-08
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- /**
- * 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;
- import java.io.IOException;
- import org.apache.hadoop.conf.Configuration;
- import org.apache.hadoop.util.Progressable;
- /**
- * The context for task attempts.
- */
- public class TaskAttemptContext extends JobContext implements Progressable {
- private final TaskAttemptID taskId;
- private String status = "";
-
- public TaskAttemptContext(Configuration conf,
- TaskAttemptID taskId) {
- super(conf, taskId.getJobID());
- this.taskId = taskId;
- }
- /**
- * Get the unique name for this task attempt.
- */
- public TaskAttemptID getTaskAttemptID() {
- return taskId;
- }
- /**
- * Set the current status of the task to the given string.
- */
- public void setStatus(String msg) throws IOException {
- status = msg;
- }
- /**
- * Get the last set status message.
- * @return the current status message
- */
- public String getStatus() {
- return status;
- }
- /**
- * Report progress. The subtypes actually do work in this method.
- */
- public void progress() {
- }
- }