001/**
002 *
003 * Licensed to the Apache Software Foundation (ASF) under one
004 * or more contributor license agreements.  See the NOTICE file
005 * distributed with this work for additional information
006 * regarding copyright ownership.  The ASF licenses this file
007 * to you under the Apache License, Version 2.0 (the
008 * "License"); you may not use this file except in compliance
009 * with the License.  You may obtain a copy of the License at
010 *
011 *     http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 */
019package org.apache.hadoop.hbase.regionserver;
020
021import org.apache.hadoop.hbase.ServerName;
022import org.apache.yetus.audience.InterfaceAudience;
023
024/**
025 * Interface to Map of online regions.  In the  Map, the key is the region's
026 * encoded name and the value is an {@link Region} instance.
027 */
028@InterfaceAudience.Private
029public interface MutableOnlineRegions extends OnlineRegions {
030
031  /**
032   * Add to online regions.
033   * @param r
034   */
035  void addRegion(final HRegion r);
036
037  /**
038   * Removes the given Region from the list of onlineRegions.
039   * @param r Region to remove.
040   * @param destination Destination, if any, null otherwise.
041   * @return True if we removed a region from online list.
042   */
043  boolean removeRegion(final HRegion r, ServerName destination);
044}