| /** |
| * 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.hdfs; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FSDataOutputStream; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.junit.Test; |
| import org.slf4j.event.Level; |
| |
| public class TestFileCreationDelete { |
| { |
| DFSTestUtil.setNameNodeLogLevel(Level.TRACE); |
| } |
| |
| @Test |
| public void testFileCreationDeleteParent() throws IOException { |
| Configuration conf = new HdfsConfiguration(); |
| final int MAX_IDLE_TIME = 2000; // 2s |
| conf.setInt("ipc.client.connection.maxidletime", MAX_IDLE_TIME); |
| conf.setInt(DFSConfigKeys.DFS_NAMENODE_HEARTBEAT_RECHECK_INTERVAL_KEY, 1000); |
| conf.setInt(DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_KEY, 1); |
| |
| // create cluster |
| MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).build(); |
| FileSystem fs = null; |
| try { |
| cluster.waitActive(); |
| fs = cluster.getFileSystem(); |
| |
| // create file1. |
| Path dir = new Path("/foo"); |
| Path file1 = new Path(dir, "file1"); |
| FSDataOutputStream stm1 = TestFileCreation.createFile(fs, file1, 1); |
| System.out.println("testFileCreationDeleteParent: " |
| + "Created file " + file1); |
| TestFileCreation.writeFile(stm1, 1000); |
| stm1.hflush(); |
| |
| // create file2. |
| Path file2 = new Path("/file2"); |
| FSDataOutputStream stm2 = TestFileCreation.createFile(fs, file2, 1); |
| System.out.println("testFileCreationDeleteParent: " |
| + "Created file " + file2); |
| TestFileCreation.writeFile(stm2, 1000); |
| stm2.hflush(); |
| |
| // rm dir |
| fs.delete(dir, true); |
| |
| // restart cluster. |
| // This ensures that leases are persisted in fsimage. |
| cluster.shutdown(); |
| try {Thread.sleep(2*MAX_IDLE_TIME);} catch (InterruptedException e) {} |
| cluster = new MiniDFSCluster.Builder(conf).format(false).build(); |
| cluster.waitActive(); |
| |
| // restart cluster yet again. This triggers the code to read in |
| // persistent leases from fsimage. |
| cluster.shutdown(); |
| try {Thread.sleep(5000);} catch (InterruptedException e) {} |
| cluster = new MiniDFSCluster.Builder(conf).format(false).build(); |
| cluster.waitActive(); |
| fs = cluster.getFileSystem(); |
| |
| assertTrue(!fs.exists(file1)); |
| assertTrue(fs.exists(file2)); |
| } finally { |
| fs.close(); |
| cluster.shutdown(); |
| } |
| } |
| } |