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.master.normalizer;
020
021import org.apache.yetus.audience.InterfaceAudience;
022import org.apache.hadoop.hbase.client.Admin;
023
024/**
025 * Interface for normalization plan.
026 */
027@InterfaceAudience.Private
028public interface NormalizationPlan {
029  enum PlanType {
030    SPLIT,
031    MERGE,
032    NONE
033  }
034
035  /**
036   * Executes normalization plan on cluster (does actual splitting/merging work).
037   * @param admin instance of Admin
038   */
039  void execute(Admin admin);
040
041  /**
042   * @return the type of this plan
043   */
044  PlanType getType();
045}