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Server functionality for HBase

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/*
 * 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.fs.FileStatus;
import org.apache.yetus.audience.InterfaceAudience;

/**
 * Base class for the log cleaning function inside the master. By default, three cleaners:
 * TimeToLiveLogCleaner, TimeToLiveProcedureWALCleaner and
 * ReplicationLogCleaner are called in order. So if other effects are needed, implement
 * your own LogCleanerDelegate and add it to the configuration "hbase.master.logcleaner.plugins",
 * which is a comma-separated list of fully qualified class names. LogsCleaner will add it to the
 * chain.
 * 
 * HBase ships with LogsCleaner as the default implementation.
 * 
 * This interface extends Configurable, so setConf needs to be called once before using the cleaner.
 * Since LogCleanerDelegates are created in LogsCleaner by reflection. Classes that implements this
 * interface should provide a default constructor.
 */
@InterfaceAudience.Private
public abstract class BaseLogCleanerDelegate extends BaseFileCleanerDelegate {

  @Override
  public boolean isFileDeletable(FileStatus fStat) {
    return false;
  }
}