| /** |
| * 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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 org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.SafeModeAction; |
| import org.apache.hadoop.hdfs.NameNodeProxies; |
| import org.apache.hadoop.hdfs.protocol.ClientProtocol; |
| import org.apache.hadoop.hdfs.server.federation.MiniRouterDFSCluster; |
| import org.apache.hadoop.hdfs.server.federation.RouterConfigBuilder; |
| import org.apache.hadoop.hdfs.server.protocol.NamenodeProtocol; |
| import org.junit.AfterClass; |
| import org.junit.Before; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.IOException; |
| import java.net.URISyntaxException; |
| import java.util.Random; |
| import java.util.concurrent.TimeUnit; |
| |
| import static org.apache.hadoop.hdfs.server.federation.FederationTestUtils.createFile; |
| import static org.apache.hadoop.hdfs.server.federation.FederationTestUtils.verifyFileExists; |
| |
| /** |
| * The the RPC interface of the {@link Router} implemented by |
| * {@link RouterRpcServer}. |
| * Tests covering the functionality of RouterRPCServer with |
| * single nameService. |
| */ |
| public class TestRouterRpcSingleNS { |
| |
| /** |
| * Federated HDFS cluster. |
| */ |
| private static MiniRouterDFSCluster cluster; |
| |
| /** |
| * Random Router for this federated cluster. |
| */ |
| private MiniRouterDFSCluster.RouterContext router; |
| |
| /** |
| * Random nameservice in the federated cluster. |
| */ |
| private String ns; |
| /** |
| * First namenode in the nameservice. |
| */ |
| private MiniRouterDFSCluster.NamenodeContext namenode; |
| |
| /** |
| * Client interface to the Router. |
| */ |
| private ClientProtocol routerProtocol; |
| /** |
| * Client interface to the Namenode. |
| */ |
| private ClientProtocol nnProtocol; |
| |
| /** |
| * NameNodeProtocol interface to the Router. |
| */ |
| private NamenodeProtocol routerNamenodeProtocol; |
| /** |
| * NameNodeProtocol interface to the Namenode. |
| */ |
| private NamenodeProtocol nnNamenodeProtocol; |
| |
| /** |
| * Filesystem interface to the Router. |
| */ |
| private FileSystem routerFS; |
| /** |
| * Filesystem interface to the Namenode. |
| */ |
| private FileSystem nnFS; |
| |
| /** |
| * File in the Router. |
| */ |
| private String routerFile; |
| /** |
| * File in the Namenode. |
| */ |
| private String nnFile; |
| |
| @BeforeClass |
| public static void globalSetUp() throws Exception { |
| cluster = new MiniRouterDFSCluster(false, 1); |
| cluster.setNumDatanodesPerNameservice(2); |
| |
| // Start NNs and DNs and wait until ready |
| cluster.startCluster(); |
| |
| // Start routers with only an RPC service |
| Configuration routerConf = new RouterConfigBuilder().metrics().rpc() |
| .build(); |
| // We decrease the DN cache times to make the test faster |
| routerConf.setTimeDuration(RBFConfigKeys.DN_REPORT_CACHE_EXPIRE, 1, |
| TimeUnit.SECONDS); |
| cluster.addRouterOverrides(routerConf); |
| cluster.startRouters(); |
| |
| // Register and verify all NNs with all routers |
| cluster.registerNamenodes(); |
| cluster.waitNamenodeRegistration(); |
| } |
| |
| @AfterClass |
| public static void tearDown() { |
| cluster.shutdown(); |
| } |
| |
| @Before |
| public void testSetup() throws Exception { |
| |
| // Create mock locations |
| cluster.installMockLocations(); |
| |
| // Delete all files via the NNs and verify |
| cluster.deleteAllFiles(); |
| |
| // Create test fixtures on NN |
| cluster.createTestDirectoriesNamenode(); |
| |
| // Wait to ensure NN has fully created its test directories |
| Thread.sleep(100); |
| |
| // Random router for this test |
| MiniRouterDFSCluster.RouterContext rndRouter = cluster.getRandomRouter(); |
| this.setRouter(rndRouter); |
| |
| // Pick a namenode for this test |
| String ns0 = cluster.getNameservices().get(0); |
| this.setNs(ns0); |
| this.setNamenode(cluster.getNamenode(ns0, null)); |
| |
| // Create a test file on the NN |
| Random rnd = new Random(); |
| String randomFile = "testfile-" + rnd.nextInt(); |
| this.nnFile = cluster.getNamenodeTestDirectoryForNS(ns) + "/" + randomFile; |
| this.routerFile = cluster.getFederatedTestDirectoryForNS(ns) + "/" |
| + randomFile; |
| |
| createFile(nnFS, nnFile, 32); |
| verifyFileExists(nnFS, nnFile); |
| } |
| |
| protected void setRouter(MiniRouterDFSCluster.RouterContext r) |
| throws IOException, URISyntaxException { |
| this.router = r; |
| this.routerProtocol = r.getClient().getNamenode(); |
| this.routerFS = r.getFileSystem(); |
| this.routerNamenodeProtocol = NameNodeProxies.createProxy(router.getConf(), |
| router.getFileSystem().getUri(), NamenodeProtocol.class).getProxy(); |
| } |
| |
| protected void setNs(String nameservice) { |
| this.ns = nameservice; |
| } |
| |
| protected void setNamenode(MiniRouterDFSCluster.NamenodeContext nn) |
| throws IOException, URISyntaxException { |
| this.namenode = nn; |
| this.nnProtocol = nn.getClient().getNamenode(); |
| this.nnFS = nn.getFileSystem(); |
| |
| // Namenode from the default namespace |
| String ns0 = cluster.getNameservices().get(0); |
| MiniRouterDFSCluster.NamenodeContext nn0 = cluster.getNamenode(ns0, null); |
| this.nnNamenodeProtocol = NameNodeProxies.createProxy(nn0.getConf(), |
| nn0.getFileSystem().getUri(), NamenodeProtocol.class).getProxy(); |
| } |
| |
| @Test |
| public void testGetCurrentTXIDandRollEdits() throws IOException { |
| Long rollEdits = routerProtocol.rollEdits(); |
| Long currentTXID = routerProtocol.getCurrentEditLogTxid(); |
| |
| assertEquals(rollEdits, currentTXID); |
| } |
| |
| @Test |
| public void testSaveNamespace() throws IOException { |
| cluster.getCluster().getFileSystem() |
| .setSafeMode(SafeModeAction.ENTER); |
| Boolean saveNamespace = routerProtocol.saveNamespace(0, 0); |
| |
| assertTrue(saveNamespace); |
| } |
| } |