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