| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.hadoop.hbase.regionserver; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hbase.CellComparator; |
| import org.apache.hadoop.hbase.regionserver.compactions.CompactionRequestImpl; |
| import org.apache.yetus.audience.InterfaceAudience; |
| import org.apache.hadoop.hbase.regionserver.compactions.CompactionContext; |
| import org.apache.hadoop.hbase.regionserver.compactions.DateTieredCompactionPolicy; |
| import org.apache.hadoop.hbase.regionserver.compactions.DateTieredCompactionRequest; |
| import org.apache.hadoop.hbase.regionserver.compactions.DateTieredCompactor; |
| import org.apache.hadoop.hbase.regionserver.throttle.ThroughputController; |
| import org.apache.hadoop.hbase.security.User; |
| |
| /** |
| * HBASE-15400 This store engine allows us to store data in date tiered layout with exponential |
| * sizing so that the more recent data has more granularity. Time-range scan will perform the |
| * best with most recent data. When data reach maxAge, they are compacted in fixed-size time |
| * windows for TTL and archiving. Please refer to design spec for more details. |
| * https://docs.google.com/document/d/1_AmlNb2N8Us1xICsTeGDLKIqL6T-oHoRLZ323MG_uy8/edit#heading=h.uk6y5pd3oqgx |
| */ |
| @InterfaceAudience.Private |
| public class DateTieredStoreEngine extends StoreEngine<DefaultStoreFlusher, |
| DateTieredCompactionPolicy, DateTieredCompactor, DefaultStoreFileManager> { |
| @Override |
| public boolean needsCompaction(List<HStoreFile> filesCompacting) { |
| return compactionPolicy.needsCompaction(storeFileManager.getStorefiles(), |
| filesCompacting); |
| } |
| |
| @Override |
| public CompactionContext createCompaction() throws IOException { |
| return new DateTieredCompactionContext(); |
| } |
| |
| @Override |
| protected void createComponents(Configuration conf, HStore store, CellComparator kvComparator) |
| throws IOException { |
| this.compactionPolicy = new DateTieredCompactionPolicy(conf, store); |
| this.storeFileManager = |
| new DefaultStoreFileManager(kvComparator, StoreFileComparators.SEQ_ID_MAX_TIMESTAMP, conf, |
| compactionPolicy.getConf()); |
| this.storeFlusher = new DefaultStoreFlusher(conf, store); |
| this.compactor = new DateTieredCompactor(conf, store); |
| } |
| |
| private final class DateTieredCompactionContext extends CompactionContext { |
| |
| @Override |
| public List<HStoreFile> preSelect(List<HStoreFile> filesCompacting) { |
| return compactionPolicy.preSelectCompactionForCoprocessor(storeFileManager.getStorefiles(), |
| filesCompacting); |
| } |
| |
| @Override |
| public boolean select(List<HStoreFile> filesCompacting, boolean isUserCompaction, |
| boolean mayUseOffPeak, boolean forceMajor) throws IOException { |
| request = compactionPolicy.selectCompaction(storeFileManager.getStorefiles(), filesCompacting, |
| isUserCompaction, mayUseOffPeak, forceMajor); |
| return request != null; |
| } |
| |
| @Override |
| public void forceSelect(CompactionRequestImpl request) { |
| if (!(request instanceof DateTieredCompactionRequest)) { |
| throw new IllegalArgumentException("DateTieredCompactionRequest is expected. Actual: " |
| + request.getClass().getCanonicalName()); |
| } |
| super.forceSelect(request); |
| } |
| |
| @Override |
| public List<Path> compact(ThroughputController throughputController, User user) |
| throws IOException { |
| if (request instanceof DateTieredCompactionRequest) { |
| DateTieredCompactionRequest compactionRequest = (DateTieredCompactionRequest) request; |
| return compactor.compact(request, compactionRequest.getBoundaries(), |
| compactionRequest.getBoundariesPolicies(), |
| throughputController, user); |
| } else { |
| throw new IllegalArgumentException("DateTieredCompactionRequest is expected. Actual: " |
| + request.getClass().getCanonicalName()); |
| } |
| } |
| } |
| } |