| /** |
| * 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.Collection; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.hbase.HBaseInterfaceAudience; |
| import org.apache.hadoop.hbase.classification.InterfaceAudience; |
| |
| /** |
| * A {@link FlushPolicy} that only flushes store larger a given threshold. If no store is large |
| * enough, then all stores will be flushed. |
| */ |
| @InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.CONFIG) |
| public class FlushAllLargeStoresPolicy extends FlushLargeStoresPolicy{ |
| |
| private static final Log LOG = LogFactory.getLog(FlushAllLargeStoresPolicy.class); |
| |
| @Override |
| protected void configureForRegion(HRegion region) { |
| super.configureForRegion(region); |
| int familyNumber = region.getTableDesc().getFamilies().size(); |
| if (familyNumber <= 1) { |
| // No need to parse and set flush size lower bound if only one family |
| // Family number might also be zero in some of our unit test case |
| return; |
| } |
| this.flushSizeLowerBound = getFlushSizeLowerBound(region); |
| } |
| |
| @Override |
| public Collection<Store> selectStoresToFlush() { |
| // no need to select stores if only one family |
| if (region.getTableDesc().getFamilies().size() == 1) { |
| return region.stores.values(); |
| } |
| // start selection |
| Collection<Store> stores = region.stores.values(); |
| Set<Store> specificStoresToFlush = new HashSet<Store>(); |
| for (Store store : stores) { |
| if (shouldFlush(store)) { |
| specificStoresToFlush.add(store); |
| } |
| } |
| if (!specificStoresToFlush.isEmpty()) return specificStoresToFlush; |
| |
| // Didn't find any CFs which were above the threshold for selection. |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Since none of the CFs were above the size, flushing all."); |
| } |
| return stores; |
| } |
| |
| @Override |
| protected boolean shouldFlush(Store store) { |
| return (super.shouldFlush(store) || region.shouldFlushStore(store)); |
| } |
| |
| } |