| /** |
| * 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.federation.router; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.TreeMap; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hdfs.protocol.ClientProtocol; |
| import org.apache.hadoop.hdfs.protocol.DirectoryListing; |
| import org.apache.hadoop.hdfs.protocol.HdfsFileStatus; |
| import org.apache.hadoop.hdfs.server.federation.MiniRouterDFSCluster.NamenodeContext; |
| import org.apache.hadoop.hdfs.server.federation.MiniRouterDFSCluster.RouterContext; |
| import org.apache.hadoop.hdfs.server.federation.RouterConfigBuilder; |
| import org.apache.hadoop.hdfs.server.federation.StateStoreDFSCluster; |
| import org.apache.hadoop.hdfs.server.federation.resolver.MountTableManager; |
| import org.apache.hadoop.hdfs.server.federation.resolver.MountTableResolver; |
| import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntryRequest; |
| import org.apache.hadoop.hdfs.server.federation.store.protocol.AddMountTableEntryResponse; |
| import org.apache.hadoop.hdfs.server.federation.store.records.MountTable; |
| import org.apache.hadoop.util.Time; |
| import org.junit.AfterClass; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| /** |
| * Test a router end-to-end including the MountTable. |
| */ |
| public class TestRouterMountTable { |
| |
| private static StateStoreDFSCluster cluster; |
| private static NamenodeContext nnContext; |
| private static RouterContext routerContext; |
| private static MountTableResolver mountTable; |
| private static ClientProtocol routerProtocol; |
| |
| @BeforeClass |
| public static void globalSetUp() throws Exception { |
| |
| // Build and start a federated cluster |
| cluster = new StateStoreDFSCluster(false, 1); |
| Configuration conf = new RouterConfigBuilder() |
| .stateStore() |
| .admin() |
| .rpc() |
| .build(); |
| cluster.addRouterOverrides(conf); |
| cluster.startCluster(); |
| cluster.startRouters(); |
| cluster.waitClusterUp(); |
| |
| // Get the end points |
| nnContext = cluster.getRandomNamenode(); |
| routerContext = cluster.getRandomRouter(); |
| Router router = routerContext.getRouter(); |
| routerProtocol = routerContext.getClient().getNamenode(); |
| mountTable = (MountTableResolver) router.getSubclusterResolver(); |
| } |
| |
| @AfterClass |
| public static void tearDown() { |
| if (cluster != null) { |
| cluster.stopRouter(routerContext); |
| cluster.shutdown(); |
| cluster = null; |
| } |
| } |
| |
| @Test |
| public void testReadOnly() throws Exception { |
| |
| // Add a read only entry |
| MountTable readOnlyEntry = MountTable.newInstance( |
| "/readonly", Collections.singletonMap("ns0", "/testdir")); |
| readOnlyEntry.setReadOnly(true); |
| assertTrue(addMountTable(readOnlyEntry)); |
| |
| // Add a regular entry |
| MountTable regularEntry = MountTable.newInstance( |
| "/regular", Collections.singletonMap("ns0", "/testdir")); |
| assertTrue(addMountTable(regularEntry)); |
| |
| // Create a folder which should show in all locations |
| final FileSystem nnFs = nnContext.getFileSystem(); |
| final FileSystem routerFs = routerContext.getFileSystem(); |
| assertTrue(routerFs.mkdirs(new Path("/regular/newdir"))); |
| |
| FileStatus dirStatusNn = |
| nnFs.getFileStatus(new Path("/testdir/newdir")); |
| assertTrue(dirStatusNn.isDirectory()); |
| FileStatus dirStatusRegular = |
| routerFs.getFileStatus(new Path("/regular/newdir")); |
| assertTrue(dirStatusRegular.isDirectory()); |
| FileStatus dirStatusReadOnly = |
| routerFs.getFileStatus(new Path("/readonly/newdir")); |
| assertTrue(dirStatusReadOnly.isDirectory()); |
| |
| // It should fail writing into a read only path |
| try { |
| routerFs.mkdirs(new Path("/readonly/newdirfail")); |
| fail("We should not be able to write into a read only mount point"); |
| } catch (IOException ioe) { |
| String msg = ioe.getMessage(); |
| assertTrue(msg.startsWith( |
| "/readonly/newdirfail is in a read only mount point")); |
| } |
| } |
| |
| /** |
| * Add a mount table entry to the mount table through the admin API. |
| * @param entry Mount table entry to add. |
| * @return If it was succesfully added. |
| * @throws IOException Problems adding entries. |
| */ |
| private boolean addMountTable(final MountTable entry) throws IOException { |
| RouterClient client = routerContext.getAdminClient(); |
| MountTableManager mountTableManager = client.getMountTableManager(); |
| AddMountTableEntryRequest addRequest = |
| AddMountTableEntryRequest.newInstance(entry); |
| AddMountTableEntryResponse addResponse = |
| mountTableManager.addMountTableEntry(addRequest); |
| |
| // Reload the Router cache |
| mountTable.loadCache(true); |
| |
| return addResponse.getStatus(); |
| } |
| |
| /** |
| * Verify that the file/dir listing contains correct date/time information. |
| */ |
| @Test |
| public void testListFilesTime() throws Exception { |
| Long beforeCreatingTime = Time.now(); |
| // Add mount table entry |
| MountTable addEntry = MountTable.newInstance( |
| "/testdir", Collections.singletonMap("ns0", "/testdir")); |
| assertTrue(addMountTable(addEntry)); |
| addEntry = MountTable.newInstance( |
| "/testdir2", Collections.singletonMap("ns0", "/testdir2")); |
| assertTrue(addMountTable(addEntry)); |
| addEntry = MountTable.newInstance( |
| "/testdir/subdir", Collections.singletonMap("ns0", "/testdir/subdir")); |
| assertTrue(addMountTable(addEntry)); |
| addEntry = MountTable.newInstance( |
| "/testdir3/subdir1", Collections.singletonMap("ns0", "/testdir3")); |
| assertTrue(addMountTable(addEntry)); |
| addEntry = MountTable.newInstance( |
| "/testA/testB/testC/testD", Collections.singletonMap("ns0", "/test")); |
| assertTrue(addMountTable(addEntry)); |
| |
| // Create test dir in NN |
| final FileSystem nnFs = nnContext.getFileSystem(); |
| assertTrue(nnFs.mkdirs(new Path("/newdir"))); |
| |
| Map<String, Long> pathModTime = new TreeMap<>(); |
| for (String mount : mountTable.getMountPoints("/")) { |
| if (mountTable.getMountPoint("/"+mount) != null) { |
| pathModTime.put(mount, mountTable.getMountPoint("/"+mount) |
| .getDateModified()); |
| } else { |
| List<MountTable> entries = mountTable.getMounts("/"+mount); |
| for (MountTable entry : entries) { |
| if (pathModTime.get(mount) == null || |
| pathModTime.get(mount) < entry.getDateModified()) { |
| pathModTime.put(mount, entry.getDateModified()); |
| } |
| } |
| } |
| } |
| FileStatus[] iterator = nnFs.listStatus(new Path("/")); |
| for (FileStatus file : iterator) { |
| pathModTime.put(file.getPath().getName(), file.getModificationTime()); |
| } |
| // Fetch listing |
| DirectoryListing listing = |
| routerProtocol.getListing("/", HdfsFileStatus.EMPTY_NAME, false); |
| Iterator<String> pathModTimeIterator = pathModTime.keySet().iterator(); |
| |
| // Match date/time for each path returned |
| for(HdfsFileStatus f : listing.getPartialListing()) { |
| String fileName = pathModTimeIterator.next(); |
| String currentFile = f.getFullPath(new Path("/")).getName(); |
| Long currentTime = f.getModificationTime(); |
| Long expectedTime = pathModTime.get(currentFile); |
| |
| assertEquals(currentFile, fileName); |
| assertTrue(currentTime > beforeCreatingTime); |
| assertEquals(currentTime, expectedTime); |
| } |
| // Verify the total number of results found/matched |
| assertEquals(pathModTime.size(), listing.getPartialListing().length); |
| } |
| } |