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 boolean requireWritingToTmpDirFirst() {
042    return true;
043  }
044
045  @Override
046  protected void doAddNewStoreFiles(Collection<StoreFileInfo> newFiles) throws IOException {
047    // NOOP
048  }
049
050  @Override
051  protected void doAddCompactionResults(Collection<StoreFileInfo> compactedFiles,
052    Collection<StoreFileInfo> newFiles) throws IOException {
053    // NOOP
054  }
055
056  @Override
057  protected List<StoreFileInfo> doLoadStoreFiles(boolean readOnly) throws IOException {
058    List<StoreFileInfo> files =
059      ctx.getRegionFileSystem().getStoreFiles(ctx.getFamily().getNameAsString());
060    return files != null ? files : Collections.emptyList();
061  }
062
063  @Override
064  protected void doSetStoreFiles(Collection<StoreFileInfo> files) throws IOException {
065  }
066}