| /* |
| * 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.cassandra.io.sstable; |
| |
| import java.io.File; |
| import java.util.Queue; |
| import java.util.concurrent.ConcurrentLinkedQueue; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.cassandra.concurrent.ScheduledExecutors; |
| import org.apache.cassandra.db.WindowsFailedSnapshotTracker; |
| import org.apache.cassandra.io.FSWriteError; |
| import org.apache.cassandra.io.util.FileUtils; |
| |
| public class SnapshotDeletingTask implements Runnable |
| { |
| private static final Logger logger = LoggerFactory.getLogger(SnapshotDeletingTask.class); |
| |
| public final File path; |
| private static final Queue<Runnable> failedTasks = new ConcurrentLinkedQueue<>(); |
| |
| public static void addFailedSnapshot(File path) |
| { |
| logger.warn("Failed to delete snapshot [{}]. Will retry after further sstable deletions. Folder will be deleted on JVM shutdown or next node restart on crash.", path); |
| WindowsFailedSnapshotTracker.handleFailedSnapshot(path); |
| failedTasks.add(new SnapshotDeletingTask(path)); |
| } |
| |
| private SnapshotDeletingTask(File path) |
| { |
| this.path = path; |
| } |
| |
| public void run() |
| { |
| try |
| { |
| FileUtils.deleteRecursive(path); |
| logger.info("Successfully deleted snapshot {}.", path); |
| } |
| catch (FSWriteError e) |
| { |
| failedTasks.add(this); |
| } |
| } |
| |
| /** |
| * Retry all failed deletions. |
| */ |
| public static void rescheduleFailedTasks() |
| { |
| Runnable task; |
| while ( null != (task = failedTasks.poll())) |
| ScheduledExecutors.nonPeriodicTasks.submit(task); |
| } |
| |
| @VisibleForTesting |
| public static int pendingDeletionCount() |
| { |
| return failedTasks.size(); |
| } |
| } |