| /* |
| * 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.fs.swift; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.fs.FSDataOutputStream; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.swift.util.SwiftTestUtils; |
| import org.junit.Test; |
| |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * Test Swift FS concurrency logic. This isn't a very accurate test, |
| * because it is hard to consistently generate race conditions. |
| * Consider it "best effort" |
| */ |
| public class TestSwiftFileSystemConcurrency extends SwiftFileSystemBaseTest { |
| protected static final Log LOG = |
| LogFactory.getLog(TestSwiftFileSystemConcurrency.class); |
| private Exception thread1Ex, thread2Ex; |
| public static final String TEST_RACE_CONDITION_ON_DELETE_DIR = |
| "/test/testraceconditionondirdeletetest"; |
| |
| /** |
| * test on concurrent file system changes |
| */ |
| @Test(timeout = SWIFT_TEST_TIMEOUT) |
| public void testRaceConditionOnDirDeleteTest() throws Exception { |
| SwiftTestUtils.skip("Skipping unreliable test"); |
| |
| final String message = "message"; |
| final Path fileToRead = new Path( |
| TEST_RACE_CONDITION_ON_DELETE_DIR +"/files/many-files/file"); |
| final ExecutorService executorService = Executors.newFixedThreadPool(2); |
| fs.create(new Path(TEST_RACE_CONDITION_ON_DELETE_DIR +"/file/test/file1")); |
| fs.create(new Path(TEST_RACE_CONDITION_ON_DELETE_DIR + "/documents/doc1")); |
| fs.create(new Path( |
| TEST_RACE_CONDITION_ON_DELETE_DIR + "/pictures/picture")); |
| |
| |
| executorService.execute(new Runnable() { |
| @Override |
| public void run() { |
| try { |
| assertDeleted(new Path(TEST_RACE_CONDITION_ON_DELETE_DIR), true); |
| } catch (IOException e) { |
| LOG.warn("deletion thread:" + e, e); |
| thread1Ex = e; |
| throw new RuntimeException(e); |
| } |
| } |
| }); |
| executorService.execute(new Runnable() { |
| @Override |
| public void run() { |
| try { |
| final FSDataOutputStream outputStream = fs.create(fileToRead); |
| outputStream.write(message.getBytes()); |
| outputStream.close(); |
| } catch (IOException e) { |
| LOG.warn("writer thread:" + e, e); |
| thread2Ex = e; |
| throw new RuntimeException(e); |
| } |
| } |
| }); |
| |
| executorService.awaitTermination(1, TimeUnit.MINUTES); |
| if (thread1Ex != null) { |
| throw thread1Ex; |
| } |
| if (thread2Ex != null) { |
| throw thread2Ex; |
| } |
| try { |
| fs.open(fileToRead); |
| LOG.info("concurrency test failed to trigger a failure"); |
| } catch (FileNotFoundException expected) { |
| |
| } |
| |
| } |
| } |