| /** |
| * 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.ArrayList; |
| 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.HBaseInterfaceAudience; |
| import org.apache.hadoop.hbase.regionserver.compactions.CompactionRequestImpl; |
| import org.apache.yetus.audience.InterfaceAudience; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.apache.hadoop.hbase.regionserver.compactions.CompactionContext; |
| import org.apache.hadoop.hbase.regionserver.compactions.StripeCompactionPolicy; |
| import org.apache.hadoop.hbase.regionserver.compactions.StripeCompactor; |
| import org.apache.hadoop.hbase.regionserver.throttle.ThroughputController; |
| import org.apache.hadoop.hbase.security.User; |
| |
| import org.apache.hbase.thirdparty.com.google.common.base.Preconditions; |
| |
| /** |
| * The storage engine that implements the stripe-based store/compaction scheme. |
| */ |
| @InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.CONFIG) |
| public class StripeStoreEngine extends StoreEngine<StripeStoreFlusher, |
| StripeCompactionPolicy, StripeCompactor, StripeStoreFileManager> { |
| private static final Logger LOG = LoggerFactory.getLogger(StripeStoreEngine.class); |
| private StripeStoreConfig config; |
| |
| @Override |
| public boolean needsCompaction(List<HStoreFile> filesCompacting) { |
| return this.compactionPolicy.needsCompactions(this.storeFileManager, filesCompacting); |
| } |
| |
| @Override |
| public CompactionContext createCompaction() { |
| return new StripeCompaction(); |
| } |
| |
| @Override |
| protected void createComponents( |
| Configuration conf, HStore store, CellComparator comparator) throws IOException { |
| this.config = new StripeStoreConfig(conf, store); |
| this.compactionPolicy = new StripeCompactionPolicy(conf, store, config); |
| this.storeFileManager = new StripeStoreFileManager(comparator, conf, this.config); |
| this.storeFlusher = new StripeStoreFlusher( |
| conf, store, this.compactionPolicy, this.storeFileManager); |
| this.compactor = new StripeCompactor(conf, store); |
| } |
| |
| /** |
| * Represents one instance of stripe compaction, with the necessary context and flow. |
| */ |
| private class StripeCompaction extends CompactionContext { |
| private StripeCompactionPolicy.StripeCompactionRequest stripeRequest = null; |
| |
| @Override |
| public List<HStoreFile> preSelect(List<HStoreFile> filesCompacting) { |
| return compactionPolicy.preSelectFilesForCoprocessor(storeFileManager, filesCompacting); |
| } |
| |
| @Override |
| public boolean select(List<HStoreFile> filesCompacting, boolean isUserCompaction, |
| boolean mayUseOffPeak, boolean forceMajor) throws IOException { |
| this.stripeRequest = compactionPolicy.selectCompaction( |
| storeFileManager, filesCompacting, mayUseOffPeak); |
| this.request = (this.stripeRequest == null) |
| ? new CompactionRequestImpl(new ArrayList<>()) : this.stripeRequest.getRequest(); |
| return this.stripeRequest != null; |
| } |
| |
| @Override |
| public void forceSelect(CompactionRequestImpl request) { |
| super.forceSelect(request); |
| if (this.stripeRequest != null) { |
| this.stripeRequest.setRequest(this.request); |
| } else { |
| LOG.warn("Stripe store is forced to take an arbitrary file list and compact it."); |
| this.stripeRequest = compactionPolicy.createEmptyRequest(storeFileManager, this.request); |
| } |
| } |
| |
| @Override |
| public List<Path> compact(ThroughputController throughputController, User user) |
| throws IOException { |
| Preconditions.checkArgument(this.stripeRequest != null, "Cannot compact without selection"); |
| return this.stripeRequest.execute(compactor, throughputController, user); |
| } |
| } |
| } |