| /* |
| * 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; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.fail; |
| |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.util.Iterator; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdfs.DFSConfigKeys; |
| import org.apache.hadoop.hdfs.HdfsConfiguration; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.util.StringUtils; |
| import org.junit.After; |
| import org.junit.AfterClass; |
| import org.junit.Before; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| /** |
| * A large directory listing may have to go through multiple RPCs. |
| * The directory to be listed may be removed before all contents are listed. |
| * |
| * This test uses AspectJ to simulate the scenario. |
| */ |
| public class TestFiListPath { |
| private static final Log LOG = LogFactory.getLog(TestFiListPath.class); |
| private static final int LIST_LIMIT = 1; |
| |
| private static MiniDFSCluster cluster = null; |
| private static FileSystem fs; |
| private static Path TEST_PATH = new Path("/tmp"); |
| |
| @BeforeClass |
| public static void setup() throws IOException { |
| Configuration conf = new HdfsConfiguration(); |
| conf.setInt(DFSConfigKeys.DFS_LIST_LIMIT, LIST_LIMIT); |
| cluster = new MiniDFSCluster.Builder(conf).build(); |
| cluster.waitClusterUp(); |
| fs = cluster.getFileSystem(); |
| } |
| |
| @AfterClass |
| public static void teardown() throws IOException { |
| if (cluster != null) { |
| cluster.shutdown(); |
| } |
| } |
| |
| @Before |
| public void prepare() throws IOException { |
| fs.mkdirs(TEST_PATH); |
| for (int i=0; i<LIST_LIMIT+1; i++) { |
| fs.mkdirs(new Path(TEST_PATH, "dir"+i)); |
| } |
| } |
| |
| @After |
| public void cleanup() throws IOException { |
| fs.delete(TEST_PATH, true); |
| } |
| |
| /** Remove the target directory after the getListing RPC */ |
| @Test |
| public void testTargetDeletionForListStatus() throws Exception { |
| LOG.info("Test Target Delete For listStatus"); |
| try { |
| fs.listStatus(TEST_PATH); |
| fail("Test should fail with FileNotFoundException"); |
| } catch (FileNotFoundException e) { |
| assertEquals("File " + TEST_PATH + " does not exist.", e.getMessage()); |
| LOG.info(StringUtils.stringifyException(e)); |
| } |
| } |
| |
| /** Remove the target directory after the getListing RPC */ |
| @Test |
| public void testTargetDeletionForListLocatedStatus() throws Exception { |
| LOG.info("Test Target Delete For listLocatedStatus"); |
| RemoteIterator<LocatedFileStatus> itor = fs.listLocatedStatus(TEST_PATH); |
| itor.next(); |
| assertFalse (itor.hasNext()); |
| } |
| } |