| /** |
| * 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.server.namenode; |
| |
| import static org.junit.Assert.fail; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_NAME_DIR_KEY; |
| |
| import java.io.File; |
| |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import org.apache.hadoop.fs.FileContext; |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.fs.FileUtil; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hdfs.DFSTestUtil; |
| import org.apache.hadoop.hdfs.HdfsConfiguration; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.hdfs.server.common.Util; |
| |
| /** |
| * Tests the CreateEditsLog utility. |
| */ |
| public class TestCreateEditsLog { |
| |
| private static final File HDFS_DIR = new File( |
| MiniDFSCluster.getBaseDirectory()).getAbsoluteFile(); |
| private static final File TEST_DIR = new File( |
| System.getProperty("test.build.data", "build/test/data"), |
| "TestCreateEditsLog").getAbsoluteFile(); |
| |
| private MiniDFSCluster cluster; |
| |
| @Before |
| public void setUp() throws Exception { |
| deleteIfExists(HDFS_DIR); |
| deleteIfExists(TEST_DIR); |
| } |
| |
| @After |
| public void tearDown() { |
| if (cluster != null) { |
| cluster.shutdown(); |
| cluster = null; |
| } |
| deleteIfExists(HDFS_DIR); |
| deleteIfExists(TEST_DIR); |
| } |
| |
| /** |
| * Tests that an edits log created using CreateEditsLog is valid and can be |
| * loaded successfully by a namenode. |
| */ |
| @Test(timeout=60000) |
| public void testCanLoadCreatedEditsLog() throws Exception { |
| // Format namenode. |
| HdfsConfiguration conf = new HdfsConfiguration(); |
| File nameDir = new File(HDFS_DIR, "name"); |
| conf.set(DFS_NAMENODE_NAME_DIR_KEY, Util.fileAsURI(nameDir).toString()); |
| DFSTestUtil.formatNameNode(conf); |
| |
| // Call CreateEditsLog and move the resulting edits to the name dir. |
| CreateEditsLog.main(new String[] { "-f", "1000", "0", "1", "-d", |
| TEST_DIR.getAbsolutePath() }); |
| Path editsWildcard = new Path(TEST_DIR.getAbsolutePath(), "*"); |
| FileContext localFc = FileContext.getLocalFSFileContext(); |
| for (FileStatus edits: localFc.util().globStatus(editsWildcard)) { |
| Path src = edits.getPath(); |
| Path dst = new Path(new File(nameDir, "current").getAbsolutePath(), |
| src.getName()); |
| localFc.rename(src, dst); |
| } |
| |
| // Start a namenode to try to load the edits. |
| cluster = new MiniDFSCluster.Builder(conf) |
| .format(false) |
| .manageNameDfsDirs(false) |
| .waitSafeMode(false) |
| .build(); |
| cluster.waitClusterUp(); |
| |
| // Test successful, because no exception thrown. |
| } |
| |
| /** |
| * Fully delete the given directory if it exists. |
| * |
| * @param file File to delete |
| */ |
| private static void deleteIfExists(File file) { |
| if (file.exists() && !FileUtil.fullyDelete(file)) { |
| fail("Could not delete '" + file + "'"); |
| } |
| } |
| } |