1 /**
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 package org.apache.hadoop.hbase.regionserver.compactions;
20
21
22 import java.io.IOException;
23 import java.util.ArrayList;
24
25 import org.apache.hadoop.conf.Configuration;
26 import org.apache.hadoop.hbase.regionserver.StoreConfigInformation;
27 import org.apache.hadoop.hbase.regionserver.StoreFile;
28
29 /**
30 * Test Policy to compact everything every time.
31 */
32 public class EverythingPolicy extends RatioBasedCompactionPolicy {
33 /**
34 * Constructor.
35 *
36 * @param conf The Conf.
37 * @param storeConfigInfo Info about the store.
38 */
39 public EverythingPolicy(final Configuration conf,
40 final StoreConfigInformation storeConfigInfo) {
41 super(conf, storeConfigInfo);
42 }
43
44 @Override
45 final ArrayList<StoreFile> applyCompactionPolicy(final ArrayList<StoreFile> candidates,
46 final boolean mayUseOffPeak, final boolean mayBeStuck) throws IOException {
47
48 if (candidates.size() < comConf.getMinFilesToCompact()) {
49 return new ArrayList<StoreFile>(0);
50 }
51
52 return new ArrayList<StoreFile>(candidates);
53 }
54 }