| /** |
| * 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.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_DATA_DIR_KEY; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_DIR_KEY; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_NAME_DIR_KEY; |
| import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_SUPPORT_ALLOW_FORMAT_KEY; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.FileUtil; |
| import org.apache.hadoop.hdfs.MiniDFSCluster; |
| import org.apache.hadoop.util.StringUtils; |
| import org.junit.AfterClass; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| /** |
| * Startup and format tests |
| * |
| */ |
| public class TestAllowFormat { |
| public static final String NAME_NODE_HOST = "localhost:"; |
| public static final String NAME_NODE_HTTP_HOST = "0.0.0.0:"; |
| private static final Log LOG = |
| LogFactory.getLog(TestAllowFormat.class.getName()); |
| private static Configuration config; |
| private static MiniDFSCluster cluster = null; |
| private static File hdfsDir=null; |
| |
| @BeforeClass |
| public static void setUp() throws Exception { |
| config = new Configuration(); |
| String baseDir = System.getProperty("test.build.data", "build/test/data"); |
| |
| hdfsDir = new File(baseDir, "dfs"); |
| if ( hdfsDir.exists() && !FileUtil.fullyDelete(hdfsDir) ) { |
| throw new IOException("Could not delete hdfs directory '" + hdfsDir + |
| "'"); |
| } |
| |
| // Test has multiple name directories. |
| // Format should not really prompt us if one of the directories exist, |
| // but is empty. So in case the test hangs on an input, it means something |
| // could be wrong in the format prompting code. (HDFS-1636) |
| LOG.info("hdfsdir is " + hdfsDir.getAbsolutePath()); |
| File nameDir1 = new File(hdfsDir, "name1"); |
| File nameDir2 = new File(hdfsDir, "name2"); |
| |
| // To test multiple directory handling, we pre-create one of the name directories. |
| nameDir1.mkdirs(); |
| |
| // Set multiple name directories. |
| config.set(DFS_NAMENODE_NAME_DIR_KEY, nameDir1.getPath() + "," + nameDir2.getPath()); |
| config.set(DFS_DATANODE_DATA_DIR_KEY, new File(hdfsDir, "data").getPath()); |
| |
| config.set(DFS_NAMENODE_CHECKPOINT_DIR_KEY,new File(hdfsDir, "secondary").getPath()); |
| |
| FileSystem.setDefaultUri(config, "hdfs://"+NAME_NODE_HOST + "0"); |
| } |
| |
| /** |
| * clean up |
| */ |
| @AfterClass |
| public static void tearDown() throws Exception { |
| if (cluster!=null) { |
| cluster.shutdown(); |
| LOG.info("Stopping mini cluster"); |
| } |
| |
| if ( hdfsDir.exists() && !FileUtil.fullyDelete(hdfsDir) ) { |
| throw new IOException("Could not delete hdfs directory in tearDown '" |
| + hdfsDir + "'"); |
| } |
| } |
| |
| /** |
| * start MiniDFScluster, try formatting with different settings |
| * @throws IOException |
| * @throws InterruptedException |
| */ |
| @Test |
| public void testAllowFormat() throws IOException { |
| LOG.info("--starting mini cluster"); |
| // manage dirs parameter set to false |
| |
| NameNode nn; |
| // 1. Create a new cluster and format DFS |
| config.setBoolean(DFS_NAMENODE_SUPPORT_ALLOW_FORMAT_KEY, true); |
| cluster = new MiniDFSCluster.Builder(config).manageDataDfsDirs(false) |
| .manageNameDfsDirs(false) |
| .build(); |
| cluster.waitActive(); |
| assertNotNull(cluster); |
| |
| nn = cluster.getNameNode(); |
| assertNotNull(nn); |
| LOG.info("Mini cluster created OK"); |
| |
| // 2. Try formatting DFS with allowformat false. |
| // NOTE: the cluster must be shut down for format to work. |
| LOG.info("Verifying format will fail with allowformat false"); |
| config.setBoolean(DFS_NAMENODE_SUPPORT_ALLOW_FORMAT_KEY, false); |
| try { |
| cluster.shutdown(); |
| NameNode.format(config); |
| fail("Format succeeded, when it should have failed"); |
| } catch (IOException e) { // expected to fail |
| // Verify we got message we expected |
| assertTrue("Exception was not about formatting Namenode", |
| e.getMessage().startsWith("The option " + |
| DFS_NAMENODE_SUPPORT_ALLOW_FORMAT_KEY)); |
| LOG.info("Expected failure: " + StringUtils.stringifyException(e)); |
| LOG.info("Done verifying format will fail with allowformat false"); |
| } |
| // 3. Try formatting DFS with allowformat true |
| LOG.info("Verifying format will succeed with allowformat true"); |
| config.setBoolean(DFS_NAMENODE_SUPPORT_ALLOW_FORMAT_KEY, true); |
| NameNode.format(config); |
| LOG.info("Done verifying format will succeed with allowformat true"); |
| } |
| } |