| /** |
| * |
| * 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 org.apache.hadoop.conf.Configuration; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| /** |
| * Basic strategy chooses between two actions: flattening a segment or merging indices of all |
| * segments in the pipeline. |
| * If number of segments in pipeline exceed the limit defined in MemStoreCompactionStrategy then |
| * apply merge, otherwise flatten some segment. |
| */ |
| @InterfaceAudience.Private |
| public class BasicMemStoreCompactionStrategy extends MemStoreCompactionStrategy{ |
| private static final String NAME = "BASIC"; |
| |
| public BasicMemStoreCompactionStrategy(Configuration conf, String cfName) { |
| super(conf, cfName); |
| } |
| |
| @Override |
| public Action getAction(VersionedSegmentsList versionedList) { |
| return simpleMergeOrFlatten(versionedList, getName()); |
| } |
| |
| @Override |
| protected String getName() { |
| return NAME; |
| } |
| } |