| /** |
| * 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.yarn.server.resourcemanager.webapp; |
| |
| import org.apache.hadoop.yarn.webapp.SubView; |
| import org.apache.hadoop.yarn.webapp.YarnWebParams; |
| |
| /** |
| * This class is used to display a message that the proxy request failed |
| * because of a redirection issue. |
| */ |
| public class RedirectionErrorPage extends RmView { |
| @Override protected void preHead(Page.HTML<__> html) { |
| String aid = $(YarnWebParams.APPLICATION_ID); |
| |
| commonPreHead(html); |
| set(YarnWebParams.ERROR_MESSAGE, |
| "The application master for " + aid + " redirected the " |
| + "resource manager's web proxy's request back to the web proxy, " |
| + "which means your request to view the application master's web UI " |
| + "cannot be fulfilled. The typical cause for this error is a " |
| + "network misconfiguration that causes the resource manager's web " |
| + "proxy host to resolve to an unexpected IP address on the " |
| + "application master host. Please contact your cluster " |
| + "administrator to resolve the issue."); |
| } |
| |
| @Override protected Class<? extends SubView> content() { |
| return ErrorBlock.class; |
| } |
| } |