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.storefiletracker;
019
020import java.io.IOException;
021import java.util.Collection;
022import java.util.Collections;
023import java.util.List;
024import org.apache.hadoop.conf.Configuration;
025import org.apache.hadoop.hbase.regionserver.StoreContext;
026import org.apache.hadoop.hbase.regionserver.StoreFileInfo;
027import org.apache.yetus.audience.InterfaceAudience;
028
029/**
030 * The default implementation for store file tracker, where we do not persist the store file list,
031 * and use listing when loading store files.
032 */
033@InterfaceAudience.Private
034class DefaultStoreFileTracker extends StoreFileTrackerBase {
035
036  public DefaultStoreFileTracker(Configuration conf, boolean isPrimaryReplica, StoreContext ctx) {
037    super(conf, isPrimaryReplica, ctx);
038  }
039
040  @Override
041  public List<StoreFileInfo> load() throws IOException {
042    List<StoreFileInfo> files =
043      ctx.getRegionFileSystem().getStoreFiles(ctx.getFamily().getNameAsString());
044    return files != null ? files : Collections.emptyList();
045  }
046
047  @Override
048  public boolean requireWritingToTmpDirFirst() {
049    return true;
050  }
051
052  @Override
053  protected void doAddNewStoreFiles(Collection<StoreFileInfo> newFiles) throws IOException {
054    // NOOP
055  }
056
057  @Override
058  protected void doAddCompactionResults(Collection<StoreFileInfo> compactedFiles,
059    Collection<StoreFileInfo> newFiles) throws IOException {
060    // NOOP
061  }
062
063  @Override
064  public void set(List<StoreFileInfo> files) {
065    // NOOP
066  }
067}