| /** |
| * 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.yarn.logaggregation; |
| |
| import java.io.IOException; |
| import java.util.Timer; |
| import java.util.TimerTask; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.security.AccessControlException; |
| import org.apache.hadoop.yarn.conf.YarnConfiguration; |
| import org.apache.hadoop.yarn.service.AbstractService; |
| |
| public class AggregatedLogDeletionService extends AbstractService { |
| private static final Log LOG = LogFactory.getLog(AggregatedLogDeletionService.class); |
| |
| private Timer timer = null; |
| |
| static class LogDeletionTask extends TimerTask { |
| private Configuration conf; |
| private long retentionMillis; |
| private String suffix = null; |
| private Path remoteRootLogDir = null; |
| |
| public LogDeletionTask(Configuration conf, long retentionSecs) { |
| this.conf = conf; |
| this.retentionMillis = retentionSecs * 1000; |
| this.suffix = LogAggregationUtils.getRemoteNodeLogDirSuffix(conf); |
| this.remoteRootLogDir = |
| new Path(conf.get(YarnConfiguration.NM_REMOTE_APP_LOG_DIR, |
| YarnConfiguration.DEFAULT_NM_REMOTE_APP_LOG_DIR)); |
| } |
| |
| @Override |
| public void run() { |
| long cutoffMillis = System.currentTimeMillis() - retentionMillis; |
| LOG.info("aggregated log deletion started."); |
| try { |
| FileSystem fs = remoteRootLogDir.getFileSystem(conf); |
| |
| for(FileStatus userDir : fs.listStatus(remoteRootLogDir)) { |
| if(userDir.isDirectory()) { |
| Path userDirPath = new Path(userDir.getPath(), suffix); |
| deleteOldLogDirsFrom(userDirPath, cutoffMillis, fs); |
| } |
| } |
| } catch (IOException e) { |
| logIOException("Error reading root log dir this deletion " + |
| "attempt is being aborted", e); |
| } |
| LOG.info("aggregated log deletion finished."); |
| } |
| |
| private static void deleteOldLogDirsFrom(Path dir, long cutoffMillis, |
| FileSystem fs) { |
| try { |
| for(FileStatus appDir : fs.listStatus(dir)) { |
| if(appDir.isDirectory() && |
| appDir.getModificationTime() < cutoffMillis) { |
| if(shouldDeleteLogDir(appDir, cutoffMillis, fs)) { |
| try { |
| LOG.info("Deleting aggregated logs in "+appDir.getPath()); |
| fs.delete(appDir.getPath(), true); |
| } catch (IOException e) { |
| logIOException("Could not delete "+appDir.getPath(), e); |
| } |
| } |
| } |
| } |
| } catch (IOException e) { |
| logIOException("Could not read the contents of " + dir, e); |
| } |
| } |
| |
| private static boolean shouldDeleteLogDir(FileStatus dir, long cutoffMillis, |
| FileSystem fs) { |
| boolean shouldDelete = true; |
| try { |
| for(FileStatus node: fs.listStatus(dir.getPath())) { |
| if(node.getModificationTime() >= cutoffMillis) { |
| shouldDelete = false; |
| break; |
| } |
| } |
| } catch(IOException e) { |
| logIOException("Error reading the contents of " + dir.getPath(), e); |
| shouldDelete = false; |
| } |
| return shouldDelete; |
| } |
| } |
| |
| private static void logIOException(String comment, IOException e) { |
| if(e instanceof AccessControlException) { |
| String message = e.getMessage(); |
| //TODO fix this after HADOOP-8661 |
| message = message.split("\n")[0]; |
| LOG.warn(comment + " " + message); |
| } else { |
| LOG.error(comment, e); |
| } |
| } |
| |
| public AggregatedLogDeletionService() { |
| super(AggregatedLogDeletionService.class.getName()); |
| } |
| |
| public void start() { |
| Configuration conf = getConfig(); |
| if (!conf.getBoolean(YarnConfiguration.LOG_AGGREGATION_ENABLED, |
| YarnConfiguration.DEFAULT_LOG_AGGREGATION_ENABLED)) { |
| //Log aggregation is not enabled so don't bother |
| return; |
| } |
| long retentionSecs = conf.getLong(YarnConfiguration.LOG_AGGREGATION_RETAIN_SECONDS, |
| YarnConfiguration.DEFAULT_LOG_AGGREGATION_RETAIN_SECONDS); |
| if(retentionSecs < 0) { |
| LOG.info("Log Aggregation deletion is disabled because retention is" + |
| " too small (" + retentionSecs + ")"); |
| return; |
| } |
| long checkIntervalMsecs = 1000 * conf.getLong( |
| YarnConfiguration.LOG_AGGREGATION_RETAIN_CHECK_INTERVAL_SECONDS, |
| YarnConfiguration.DEFAULT_LOG_AGGREGATION_RETAIN_CHECK_INTERVAL_SECONDS); |
| if (checkIntervalMsecs <= 0) { |
| // when unspecified compute check interval as 1/10th of retention |
| checkIntervalMsecs = (retentionSecs * 1000) / 10; |
| } |
| TimerTask task = new LogDeletionTask(conf, retentionSecs); |
| timer = new Timer(); |
| timer.scheduleAtFixedRate(task, 0, checkIntervalMsecs); |
| super.start(); |
| } |
| |
| @Override |
| public void stop() { |
| if(timer != null) { |
| timer.cancel(); |
| } |
| super.stop(); |
| } |
| } |