| /** |
| * 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.util; |
| |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| import org.apache.hadoop.classification.InterfaceStability.Unstable; |
| |
| @Private |
| @Unstable |
| public class HostUtil { |
| |
| /** |
| * Construct the taskLogUrl |
| * @param taskTrackerHostName |
| * @param httpPort |
| * @param taskAttemptID |
| * @return the taskLogUrl |
| */ |
| public static String getTaskLogUrl(String scheme, String taskTrackerHostName, |
| String httpPort, String taskAttemptID) { |
| return (scheme + taskTrackerHostName + ":" + |
| httpPort + "/tasklog?attemptid=" + taskAttemptID); |
| } |
| |
| /** |
| * Always throws {@link RuntimeException} because this method is not |
| * supposed to be called at runtime. This method is only for keeping |
| * binary compatibility with Hive 0.13. MAPREDUCE-5830 for the details. |
| * @deprecated Use {@link #getTaskLogUrl(String, String, String, String)} |
| * to construct the taskLogUrl. |
| */ |
| @Deprecated |
| public static String getTaskLogUrl(String taskTrackerHostName, |
| String httpPort, String taskAttemptID) { |
| throw new RuntimeException( |
| "This method is not supposed to be called at runtime. " + |
| "Use HostUtil.getTaskLogUrl(String, String, String, String) instead."); |
| } |
| |
| public static String convertTrackerNameToHostName(String trackerName) { |
| // Ugly! |
| // Convert the trackerName to its host name |
| int indexOfColon = trackerName.indexOf(":"); |
| String trackerHostName = (indexOfColon == -1) ? |
| trackerName : |
| trackerName.substring(0, indexOfColon); |
| return trackerHostName.substring("tracker_".length()); |
| } |
| |
| } |