| /** |
| * 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.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.hbase.classification.InterfaceAudience; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.hbase.HBaseInterfaceAudience; |
| import org.apache.hadoop.hbase.util.EnvironmentEdgeManager; |
| |
| /** |
| * HFile cleaner that uses the timestamp of the hfile to determine if it should be deleted. By |
| * default they are allowed to live for {@value #DEFAULT_TTL} |
| */ |
| @InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.CONFIG) |
| public class TimeToLiveHFileCleaner extends BaseHFileCleanerDelegate { |
| |
| private static final Log LOG = LogFactory.getLog(TimeToLiveHFileCleaner.class.getName()); |
| public static final String TTL_CONF_KEY = "hbase.master.hfilecleaner.ttl"; |
| // default ttl = 5 minutes |
| public static final long DEFAULT_TTL = 60000 * 5; |
| // Configured time a hfile can be kept after it was moved to the archive |
| private long ttl; |
| |
| @Override |
| public void setConf(Configuration conf) { |
| this.ttl = conf.getLong(TTL_CONF_KEY, DEFAULT_TTL); |
| super.setConf(conf); |
| } |
| |
| @Override |
| public boolean isFileDeletable(FileStatus fStat) { |
| long currentTime = EnvironmentEdgeManager.currentTime(); |
| long time = fStat.getModificationTime(); |
| long life = currentTime - time; |
| if (LOG.isTraceEnabled()) { |
| LOG.trace("HFile life:" + life + ", ttl:" + ttl + ", current:" + currentTime + ", from: " |
| + time); |
| } |
| if (life < 0) { |
| LOG.warn("Found a hfile (" + fStat.getPath() + ") newer than current time (" + currentTime |
| + " < " + time + "), probably a clock skew"); |
| return false; |
| } |
| return life > ttl; |
| } |
| } |