| /** |
| * 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.master.cleaner; |
| |
| import org.apache.hadoop.hbase.classification.InterfaceAudience; |
| |
| /** |
| * Base class for the hfile cleaning function inside the master. By default, only the |
| * {@link TimeToLiveHFileCleaner} is called. |
| * <p> |
| * If other effects are needed, implement your own LogCleanerDelegate and add it to the |
| * configuration "hbase.master.hfilecleaner.plugins", which is a comma-separated list of fully |
| * qualified class names. The <code>HFileCleaner</code> will build the cleaner chain in |
| * order the order specified by the configuration. |
| * </p> |
| * <p> |
| * For subclasses, setConf will be called exactly <i>once</i> before using the cleaner. |
| * </p> |
| * <p> |
| * Since {@link BaseHFileCleanerDelegate HFileCleanerDelegates} are created in |
| * HFileCleaner by reflection, classes that implements this interface <b>must</b> |
| * provide a default constructor. |
| * </p> |
| */ |
| @InterfaceAudience.Private |
| public abstract class BaseHFileCleanerDelegate extends BaseFileCleanerDelegate { |
| |
| private boolean stopped = false; |
| |
| @Override |
| public void stop(String why) { |
| this.stopped = true; |
| } |
| |
| @Override |
| public boolean isStopped() { |
| return this.stopped; |
| } |
| } |