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.compactions;
019
020
021import java.io.IOException;
022import java.util.ArrayList;
023
024import org.apache.hadoop.conf.Configuration;
025import org.apache.hadoop.hbase.regionserver.HStoreFile;
026import org.apache.hadoop.hbase.regionserver.StoreConfigInformation;
027
028/**
029 * Test Policy to compact everything every time.
030 */
031public class EverythingPolicy extends RatioBasedCompactionPolicy {
032  /**
033   * Constructor.
034   *
035   * @param conf            The Conf.
036   * @param storeConfigInfo Info about the store.
037   */
038  public EverythingPolicy(Configuration conf, StoreConfigInformation storeConfigInfo) {
039    super(conf, storeConfigInfo);
040  }
041
042  @Override
043  protected final ArrayList<HStoreFile> applyCompactionPolicy(ArrayList<HStoreFile> candidates,
044      boolean mayUseOffPeak, boolean mayBeStuck) throws IOException {
045    if (candidates.size() < comConf.getMinFilesToCompact()) {
046      return new ArrayList<>(0);
047    }
048    return new ArrayList<>(candidates);
049  }
050}