/**
* 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;
}
}