| /** |
| * |
| * 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.HBaseInterfaceAudience; |
| import org.apache.hadoop.hbase.regionserver.compactions.CompactionContext; |
| import org.apache.hadoop.hbase.regionserver.compactions.DefaultCompactor; |
| import org.apache.hadoop.hbase.regionserver.compactions.ExploringCompactionPolicy; |
| import org.apache.hadoop.hbase.regionserver.compactions.RatioBasedCompactionPolicy; |
| import org.apache.hadoop.hbase.regionserver.throttle.ThroughputController; |
| import org.apache.hadoop.hbase.security.User; |
| import org.apache.hadoop.hbase.util.ReflectionUtils; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| /** |
| * Default StoreEngine creates the default compactor, policy, and store file manager, or |
| * their derivatives. |
| */ |
| @InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.CONFIG) |
| public class DefaultStoreEngine extends StoreEngine< |
| DefaultStoreFlusher, RatioBasedCompactionPolicy, DefaultCompactor, DefaultStoreFileManager> { |
| |
| public static final String DEFAULT_STORE_FLUSHER_CLASS_KEY = |
| "hbase.hstore.defaultengine.storeflusher.class"; |
| public static final String DEFAULT_COMPACTOR_CLASS_KEY = |
| "hbase.hstore.defaultengine.compactor.class"; |
| public static final String DEFAULT_COMPACTION_POLICY_CLASS_KEY = |
| "hbase.hstore.defaultengine.compactionpolicy.class"; |
| |
| private static final Class<? extends DefaultStoreFlusher> |
| DEFAULT_STORE_FLUSHER_CLASS = DefaultStoreFlusher.class; |
| private static final Class<? extends DefaultCompactor> |
| DEFAULT_COMPACTOR_CLASS = DefaultCompactor.class; |
| private static final Class<? extends RatioBasedCompactionPolicy> |
| DEFAULT_COMPACTION_POLICY_CLASS = ExploringCompactionPolicy.class; |
| |
| @Override |
| public boolean needsCompaction(List<HStoreFile> filesCompacting) { |
| return compactionPolicy.needsCompaction( |
| this.storeFileManager.getStorefiles(), filesCompacting); |
| } |
| |
| @Override |
| protected void createComponents( |
| Configuration conf, HStore store, CellComparator kvComparator) throws IOException { |
| createCompactor(conf, store); |
| createCompactionPolicy(conf, store); |
| createStoreFlusher(conf, store); |
| storeFileManager = |
| new DefaultStoreFileManager(kvComparator, StoreFileComparators.SEQ_ID, conf, |
| compactionPolicy.getConf()); |
| } |
| |
| protected void createCompactor(Configuration conf, HStore store) throws IOException { |
| String className = conf.get(DEFAULT_COMPACTOR_CLASS_KEY, DEFAULT_COMPACTOR_CLASS.getName()); |
| try { |
| compactor = ReflectionUtils.instantiateWithCustomCtor(className, |
| new Class[] { Configuration.class, HStore.class }, new Object[] { conf, store }); |
| } catch (Exception e) { |
| throw new IOException("Unable to load configured compactor '" + className + "'", e); |
| } |
| } |
| |
| protected void createCompactionPolicy(Configuration conf, HStore store) throws IOException { |
| String className = conf.get( |
| DEFAULT_COMPACTION_POLICY_CLASS_KEY, DEFAULT_COMPACTION_POLICY_CLASS.getName()); |
| try { |
| compactionPolicy = ReflectionUtils.instantiateWithCustomCtor(className, |
| new Class[] { Configuration.class, StoreConfigInformation.class }, |
| new Object[] { conf, store }); |
| } catch (Exception e) { |
| throw new IOException("Unable to load configured compaction policy '" + className + "'", e); |
| } |
| } |
| |
| protected void createStoreFlusher(Configuration conf, HStore store) throws IOException { |
| String className = conf.get( |
| DEFAULT_STORE_FLUSHER_CLASS_KEY, DEFAULT_STORE_FLUSHER_CLASS.getName()); |
| try { |
| storeFlusher = ReflectionUtils.instantiateWithCustomCtor(className, |
| new Class[] { Configuration.class, HStore.class }, new Object[] { conf, store }); |
| } catch (Exception e) { |
| throw new IOException("Unable to load configured store flusher '" + className + "'", e); |
| } |
| } |
| |
| @Override |
| public CompactionContext createCompaction() { |
| return new DefaultCompactionContext(); |
| } |
| |
| private class DefaultCompactionContext extends CompactionContext { |
| @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 List<Path> compact(ThroughputController throughputController, User user) |
| throws IOException { |
| return compactor.compact(request, throughputController, user); |
| } |
| |
| @Override |
| public List<HStoreFile> preSelect(List<HStoreFile> filesCompacting) { |
| return compactionPolicy.preSelectCompactionForCoprocessor( |
| storeFileManager.getStorefiles(), filesCompacting); |
| } |
| } |
| |
| } |