| /* |
| * |
| * 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.util.concurrent.LinkedBlockingQueue; |
| import java.util.concurrent.ThreadFactory; |
| import java.util.concurrent.ThreadPoolExecutor; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.hadoop.hbase.HRegionInfo; |
| import org.apache.hadoop.hbase.classification.InterfaceAudience; |
| import org.apache.hadoop.hbase.classification.InterfaceStability; |
| import org.apache.hadoop.hbase.util.StealJobQueue; |
| import org.apache.hadoop.hbase.wal.WAL; |
| |
| /** |
| * Services a Store needs from a Region. |
| * RegionServicesForStores class is the interface through which memstore access services at the |
| * region level. |
| * For example, when using alternative memory formats or due to compaction the memstore needs to |
| * take occasional lock and update size counters at the region level. |
| */ |
| @InterfaceAudience.Private |
| @InterfaceStability.Evolving |
| public class RegionServicesForStores { |
| |
| private static final int POOL_SIZE = 10; |
| private static final ThreadPoolExecutor INMEMORY_COMPACTION_POOL = |
| new ThreadPoolExecutor(POOL_SIZE, POOL_SIZE, 60, TimeUnit.SECONDS, |
| new LinkedBlockingQueue<Runnable>(), |
| new ThreadFactory() { |
| @Override |
| public Thread newThread(Runnable r) { |
| Thread t = new Thread(r); |
| t.setName(Thread.currentThread().getName() |
| + "-inmemoryCompactions-" |
| + System.currentTimeMillis()); |
| return t; |
| } |
| }); |
| private final HRegion region; |
| |
| public RegionServicesForStores(HRegion region) { |
| this.region = region; |
| } |
| |
| public void blockUpdates() { |
| region.blockUpdates(); |
| } |
| |
| public void unblockUpdates() { |
| region.unblockUpdates(); |
| } |
| |
| public long addAndGetGlobalMemstoreSize(long size) { |
| return region.addAndGetGlobalMemstoreSize(size); |
| } |
| |
| public HRegionInfo getRegionInfo() { |
| return region.getRegionInfo(); |
| } |
| |
| public WAL getWAL() { |
| return region.getWAL(); |
| } |
| |
| public ThreadPoolExecutor getInMemoryCompactionPool() { return INMEMORY_COMPACTION_POOL; } |
| |
| public long getMemstoreFlushSize() { |
| return region.getMemstoreFlushSize(); |
| } |
| |
| public int getNumStores() { |
| return region.getStores().size(); |
| } |
| |
| // methods for tests |
| long getGlobalMemstoreTotalSize() { |
| return region.getMemstoreSize(); |
| } |
| } |