001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019
020package org.apache.hadoop.hdfs.server.datanode;
021
022import java.io.IOException;
023
024import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
025import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
026
027/**
028 * Exception indicating that the replica is in an unexpected state
029 */
030public class UnexpectedReplicaStateException extends IOException {
031  private static final long serialVersionUID = 1L;
032
033  public UnexpectedReplicaStateException() {
034    super();
035  }
036
037  public UnexpectedReplicaStateException(ExtendedBlock b,
038      ReplicaState expectedState) {
039    super("Replica " + b + " is not in expected state " + expectedState);
040  }
041  
042  public UnexpectedReplicaStateException(String msg) {
043    super(msg);
044  }
045}