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.regionserver;
019
020import org.apache.hadoop.conf.Configuration;
021import org.apache.yetus.audience.InterfaceAudience;
022
023/**
024 * Basic strategy chooses between two actions: flattening a segment or merging indices of all
025 * segments in the pipeline. If number of segments in pipeline exceed the limit defined in
026 * MemStoreCompactionStrategy then apply merge, otherwise flatten some segment.
027 */
028@InterfaceAudience.Private
029public class BasicMemStoreCompactionStrategy extends MemStoreCompactionStrategy {
030  private static final String NAME = "BASIC";
031
032  public BasicMemStoreCompactionStrategy(Configuration conf, String cfName) {
033    super(conf, cfName);
034  }
035
036  @Override
037  public Action getAction(VersionedSegmentsList versionedList) {
038    return simpleMergeOrFlatten(versionedList, getName());
039  }
040
041  @Override
042  protected String getName() {
043    return NAME;
044  }
045}