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/**
 * 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 com.twitter.distributedlog.lock;

import com.twitter.distributedlog.exceptions.LockingException;

/**
 * Exception indicates that epoch already changed when executing a given
 * {@link LockAction}.
 */
public class EpochChangedException extends LockingException {

    private static final long serialVersionUID = 8775257025963870331L;

    public EpochChangedException(String lockPath, int expectedEpoch, int currentEpoch) {
        super(lockPath, "lock " + lockPath + " already moved to epoch " + currentEpoch + ", expected " + expectedEpoch);
    }
}