| /** |
| * 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.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.net.InetSocketAddress; |
| import java.util.Random; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.CommonConfigurationKeys; |
| import org.apache.hadoop.fs.FSDataOutputStream; |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hdfs.protocol.DatanodeInfo; |
| import org.apache.hadoop.hdfs.protocol.HdfsConstants.DatanodeReportType; |
| import org.apache.hadoop.util.ThreadUtil; |
| import org.junit.Test; |
| |
| /** |
| * This class tests the decommissioning of nodes. |
| */ |
| public class TestModTime { |
| |
| static final long seed = 0xDEADBEEFL; |
| static final int blockSize = 8192; |
| static final int fileSize = 16384; |
| static final int numDatanodes = 6; |
| |
| |
| Random myrand = new Random(); |
| Path hostsFile; |
| Path excludeFile; |
| |
| private void cleanupFile(FileSystem fileSys, Path name) throws IOException { |
| assertTrue(fileSys.exists(name)); |
| fileSys.delete(name, true); |
| assertTrue(!fileSys.exists(name)); |
| } |
| |
| private void printDatanodeReport(DatanodeInfo[] info) { |
| System.out.println("-------------------------------------------------"); |
| for (int i = 0; i < info.length; i++) { |
| System.out.println(info[i].getDatanodeReport()); |
| System.out.println(); |
| } |
| } |
| |
| /** |
| * Tests modification time in DFS. |
| */ |
| @Test |
| public void testModTime() throws IOException { |
| Configuration conf = new HdfsConfiguration(); |
| |
| MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf) |
| .numDataNodes(numDatanodes).build(); |
| cluster.waitActive(); |
| InetSocketAddress addr = new InetSocketAddress("localhost", |
| cluster.getNameNodePort()); |
| DFSClient client = new DFSClient(addr, conf); |
| DatanodeInfo[] info = client.datanodeReport(DatanodeReportType.LIVE); |
| assertEquals("Number of Datanodes ", numDatanodes, info.length); |
| FileSystem fileSys = cluster.getFileSystem(); |
| int replicas = numDatanodes - 1; |
| assertTrue(fileSys instanceof DistributedFileSystem); |
| |
| try { |
| |
| // |
| // create file and record ctime and mtime of test file |
| // |
| System.out.println("Creating testdir1 and testdir1/test1.dat."); |
| Path dir1 = new Path("testdir1"); |
| Path file1 = new Path(dir1, "test1.dat"); |
| DFSTestUtil.createFile(fileSys, file1, fileSize, fileSize, blockSize, |
| (short) replicas, seed); |
| FileStatus stat = fileSys.getFileStatus(file1); |
| long mtime1 = stat.getModificationTime(); |
| assertTrue(mtime1 != 0); |
| // |
| // record dir times |
| // |
| stat = fileSys.getFileStatus(dir1); |
| long mdir1 = stat.getModificationTime(); |
| |
| // |
| // create second test file |
| // |
| System.out.println("Creating testdir1/test2.dat."); |
| Path file2 = new Path(dir1, "test2.dat"); |
| DFSTestUtil.createFile(fileSys, file2, fileSize, fileSize, blockSize, |
| (short) replicas, seed); |
| stat = fileSys.getFileStatus(file2); |
| |
| // |
| // verify that mod time of dir remains the same |
| // as before. modification time of directory has increased. |
| // |
| stat = fileSys.getFileStatus(dir1); |
| assertTrue(stat.getModificationTime() >= mdir1); |
| mdir1 = stat.getModificationTime(); |
| // |
| // create another directory |
| // |
| Path dir2 = fileSys.makeQualified(new Path("testdir2/")); |
| System.out.println("Creating testdir2 " + dir2); |
| assertTrue(fileSys.mkdirs(dir2)); |
| stat = fileSys.getFileStatus(dir2); |
| long mdir2 = stat.getModificationTime(); |
| // |
| // rename file1 from testdir into testdir2 |
| // |
| Path newfile = new Path(dir2, "testnew.dat"); |
| System.out.println("Moving " + file1 + " to " + newfile); |
| fileSys.rename(file1, newfile); |
| // |
| // verify that modification time of file1 did not change. |
| // |
| stat = fileSys.getFileStatus(newfile); |
| assertTrue(stat.getModificationTime() == mtime1); |
| // |
| // verify that modification time of testdir1 and testdir2 |
| // were changed. |
| // |
| stat = fileSys.getFileStatus(dir1); |
| assertTrue(stat.getModificationTime() != mdir1); |
| mdir1 = stat.getModificationTime(); |
| |
| stat = fileSys.getFileStatus(dir2); |
| assertTrue(stat.getModificationTime() != mdir2); |
| mdir2 = stat.getModificationTime(); |
| // |
| // delete newfile |
| // |
| System.out.println("Deleting testdir2/testnew.dat."); |
| assertTrue(fileSys.delete(newfile, true)); |
| // |
| // verify that modification time of testdir1 has not changed. |
| // |
| stat = fileSys.getFileStatus(dir1); |
| assertTrue(stat.getModificationTime() == mdir1); |
| // |
| // verify that modification time of testdir2 has changed. |
| // |
| stat = fileSys.getFileStatus(dir2); |
| assertTrue(stat.getModificationTime() != mdir2); |
| mdir2 = stat.getModificationTime(); |
| |
| cleanupFile(fileSys, file2); |
| cleanupFile(fileSys, dir1); |
| cleanupFile(fileSys, dir2); |
| } catch (IOException e) { |
| info = client.datanodeReport(DatanodeReportType.ALL); |
| printDatanodeReport(info); |
| throw e; |
| } finally { |
| fileSys.close(); |
| cluster.shutdown(); |
| } |
| } |
| |
| /** |
| * Regression test for HDFS-3864 - NN does not update internal file mtime for |
| * OP_CLOSE when reading from the edit log. |
| */ |
| @Test |
| public void testModTimePersistsAfterRestart() throws IOException { |
| final long sleepTime = 10; // 10 milliseconds |
| MiniDFSCluster cluster = null; |
| FileSystem fs = null; |
| Configuration conf = new HdfsConfiguration(); |
| try { |
| cluster = new MiniDFSCluster.Builder(conf).build(); |
| fs = cluster.getFileSystem(); |
| Path testPath = new Path("/test"); |
| |
| // Open a file, and get its initial modification time. |
| OutputStream out = fs.create(testPath); |
| long initialModTime = fs.getFileStatus(testPath).getModificationTime(); |
| assertTrue(initialModTime > 0); |
| |
| // Wait and then close the file. Ensure that the mod time goes up. |
| ThreadUtil.sleepAtLeastIgnoreInterrupts(sleepTime); |
| out.close(); |
| long modTimeAfterClose = fs.getFileStatus(testPath).getModificationTime(); |
| assertTrue(modTimeAfterClose >= initialModTime + sleepTime); |
| |
| // Restart the NN, and make sure that the later mod time is still used. |
| cluster.restartNameNode(); |
| long modTimeAfterRestart = fs.getFileStatus(testPath).getModificationTime(); |
| assertEquals(modTimeAfterClose, modTimeAfterRestart); |
| } finally { |
| if (fs != null) { |
| fs.close(); |
| } |
| if (cluster != null) { |
| cluster.shutdown(); |
| } |
| } |
| } |
| |
| public static void main(String[] args) throws Exception { |
| new TestModTime().testModTime(); |
| } |
| } |