/**
* 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.hdfs.protocol;
import java.io.IOException;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.hdfs.server.protocol.NodeRegistration;
/**
* This exception is thrown when a node that has not previously
* registered is trying to access the name node.
*/
@InterfaceAudience.Private
@InterfaceStability.Evolving
public class UnregisteredNodeException extends IOException {
private static final long serialVersionUID = -5620209396945970810L;
public UnregisteredNodeException(NodeRegistration nodeReg) {
super("Unregistered server: " + nodeReg.toString());
}
/**
* The exception is thrown if a different data-node claims the same
* storage id as the existing one.
*
* @param nodeID unregistered data-node
* @param storedNode data-node stored in the system with this storage id
*/
public UnregisteredNodeException(DatanodeID nodeID, DatanodeInfo storedNode) {
super("Data node " + nodeID.getName()
+ " is attempting to report storage ID "
+ nodeID.getStorageID() + ". Node "
+ storedNode.getName() + " is expected to serve this storage.");
}
}