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.hbase.replication;
019
020import org.apache.hadoop.hbase.ServerName;
021import org.apache.yetus.audience.InterfaceAudience;
022
023/**
024 * The replication listener interface can be implemented if a class needs to subscribe to events
025 * generated by the ReplicationTracker. These events include things like addition/deletion of peer
026 * clusters or failure of a local region server. To receive events, the class also needs to register
027 * itself with a Replication Tracker.
028 */
029@InterfaceAudience.Private
030public interface ReplicationListener {
031
032  /**
033   * A region server has been removed from the local cluster
034   * @param regionServer the removed region server
035   */
036  public void regionServerRemoved(ServerName regionServer);
037}