| /* |
| * 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.mapred; |
| |
| import java.util.Iterator; |
| |
| public class DowngradeHelper { |
| // This is required since hadoop 2 TaskReport allows |
| // only package level access to this api |
| public static Iterator<TaskReport> downgradeTaskReports( |
| org.apache.hadoop.mapreduce.TaskReport[] reports) { |
| return reports == null ? null : new TaskReportIterator(reports); |
| } |
| |
| private static class TaskReportIterator implements Iterator<TaskReport> { |
| |
| private org.apache.hadoop.mapreduce.TaskReport[] reports; |
| private int curIndex = 0; |
| |
| public TaskReportIterator(org.apache.hadoop.mapreduce.TaskReport[] reports) { |
| this.reports = reports; |
| } |
| |
| @Override |
| public boolean hasNext() { |
| return curIndex < this.reports.length ; |
| } |
| |
| @Override |
| public TaskReport next() { |
| return TaskReport.downgrade(reports[curIndex++]); |
| } |
| |
| @Override |
| public void remove() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| } |
| } |