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 */
018package org.apache.hadoop.fs.s3;
019
020import org.apache.hadoop.classification.InterfaceAudience;
021import org.apache.hadoop.classification.InterfaceStability;
022
023/**
024 * Thrown when Hadoop cannot read the version of the data stored
025 * in {@link S3FileSystem}.
026 */
027@InterfaceAudience.Public
028@InterfaceStability.Stable
029public class VersionMismatchException extends S3FileSystemException {
030  private static final long serialVersionUID = 1L;
031
032  public VersionMismatchException(String clientVersion, String dataVersion) {
033    super("Version mismatch: client expects version " + clientVersion +
034        ", but data has version " +
035        (dataVersion == null ? "[unversioned]" : dataVersion));
036  }
037}