mukul1987 commented on a change in pull request #1507: URL: https://github.com/apache/hadoop-ozone/pull/1507#discussion_r508628274
########## File path: hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/TrashDeletingService.java ########## @@ -0,0 +1,114 @@ +/** + * 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 + * <p> + * http://www.apache.org/licenses/LICENSE-2.0 + * <p> + * 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.ozone.om; + +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.fs.CommonConfigurationKeysPublic; +import org.apache.hadoop.fs.FileSystem; +import org.apache.hadoop.fs.Trash; +import org.apache.hadoop.hdds.utils.BackgroundService; +import org.apache.hadoop.hdds.utils.BackgroundTask; +import org.apache.hadoop.hdds.utils.BackgroundTaskQueue; +import org.apache.hadoop.hdds.utils.BackgroundTaskResult; +import org.apache.hadoop.ozone.OzoneConsts; +import org.apache.hadoop.security.SecurityUtil; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.IOException; +import java.security.PrivilegedExceptionAction; +import java.util.concurrent.TimeUnit; + +import static org.apache.hadoop.ozone.om.OMConfigKeys.OZONE_OM_ADDRESS_KEY; + +/** + * Background Service to empty keys that are moved to Trash. + */ +public class TrashDeletingService extends BackgroundService { + + private static final Logger LOG = + LoggerFactory.getLogger(TrashDeletingService.class); + + // Use single thread for now + private final static int KEY_DELETING_CORE_POOL_SIZE = 1; + + private OzoneManager ozoneManager; + + public void setFsConf(Configuration fsConf) { + this.fsConf = fsConf; Review comment: The indentation is at 4, it should be at 2. ########## File path: hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/TrashDeletingService.java ########## @@ -0,0 +1,114 @@ +/** + * 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 + * <p> + * http://www.apache.org/licenses/LICENSE-2.0 + * <p> + * 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.ozone.om; + +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.fs.CommonConfigurationKeysPublic; +import org.apache.hadoop.fs.FileSystem; +import org.apache.hadoop.fs.Trash; +import org.apache.hadoop.hdds.utils.BackgroundService; +import org.apache.hadoop.hdds.utils.BackgroundTask; +import org.apache.hadoop.hdds.utils.BackgroundTaskQueue; +import org.apache.hadoop.hdds.utils.BackgroundTaskResult; +import org.apache.hadoop.ozone.OzoneConsts; +import org.apache.hadoop.security.SecurityUtil; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.IOException; +import java.security.PrivilegedExceptionAction; +import java.util.concurrent.TimeUnit; + +import static org.apache.hadoop.ozone.om.OMConfigKeys.OZONE_OM_ADDRESS_KEY; + +/** + * Background Service to empty keys that are moved to Trash. + */ +public class TrashDeletingService extends BackgroundService { + + private static final Logger LOG = + LoggerFactory.getLogger(TrashDeletingService.class); + + // Use single thread for now + private final static int KEY_DELETING_CORE_POOL_SIZE = 1; + + private OzoneManager ozoneManager; + + public void setFsConf(Configuration fsConf) { + this.fsConf = fsConf; + } + + private Configuration fsConf; + + public TrashDeletingService(long interval, long serviceTimeout,OzoneManager ozoneManager) { + super("TrashDeletingService", interval, TimeUnit.MILLISECONDS, KEY_DELETING_CORE_POOL_SIZE, serviceTimeout); + this.ozoneManager = ozoneManager; + fsConf = new Configuration(); + } + + + @Override + public BackgroundTaskQueue getTasks() { + BackgroundTaskQueue queue = new BackgroundTaskQueue(); + String rootPath = String.format("%s://%s/", + OzoneConsts.OZONE_OFS_URI_SCHEME, ozoneManager.getConfiguration().get(OZONE_OM_ADDRESS_KEY)); + // Configuration object where the rootpath is set to an OFS Uri. + fsConf.set(CommonConfigurationKeysPublic.FS_DEFAULT_NAME_KEY, rootPath); + FileSystem fs = null; + try { + fs = SecurityUtil.doAsLoginUser( + new PrivilegedExceptionAction<FileSystem>() { + @Override + public FileSystem run() throws IOException { + return FileSystem.get(fsConf); + } + }); + } catch (IOException e) { + LOG.error("Cannot instantiate filesystem instance"); + } + queue.add(new TrashDeletingTask(fs,fsConf)); + return queue; + } + + /** + * This task creates an emptier thread that deletes all keys obtained from the trashRoots (fs.getTrashRoots) + */ + private class TrashDeletingTask implements BackgroundTask { + + FileSystem fs; + Configuration conf; + + public TrashDeletingTask(FileSystem fs, Configuration conf) { + this.fs = fs; + this.conf = conf; + } + + @Override + public BackgroundTaskResult call() throws Exception { + Thread emptier = new Thread(new Trash(fs,conf).getEmptier(),"Trash Emptier"); Review comment: This will start 1 thread for the entire filesystem for every run? why do we need this a background service ? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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