| /** |
| * 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.dfs; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import junit.framework.TestCase; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| |
| import static org.apache.hadoop.dfs.FSConstants.NodeType.DATA_NODE; |
| import static org.apache.hadoop.dfs.FSConstants.NodeType.NAME_NODE; |
| import static org.apache.hadoop.dfs.FSConstants.LAYOUT_VERSION; |
| import org.apache.hadoop.dfs.FSConstants.StartupOption; |
| |
| /** |
| */ |
| public class TestDistributedUpgrade extends TestCase { |
| private static final Log LOG = LogFactory.getLog( |
| "org.apache.hadoop.dfs.TestDistributedUpgrade"); |
| private Configuration conf; |
| private int testCounter = 0; |
| private MiniDFSCluster cluster = null; |
| |
| /** |
| * Writes an INFO log message containing the parameters. |
| */ |
| void log(String label, int numDirs) { |
| LOG.info("============================================================"); |
| LOG.info("***TEST " + (testCounter++) + "*** " |
| + label + ":" |
| + " numDirs="+numDirs); |
| } |
| |
| /** |
| * Attempts to start a NameNode with the given operation. Starting |
| * the NameNode should throw an exception. |
| */ |
| void startNameNodeShouldFail(StartupOption operation) { |
| try { |
| cluster = new MiniDFSCluster(conf, 0, operation); // should fail |
| throw new AssertionError("NameNode should have failed to start"); |
| } catch (Exception expected) { |
| expected = null; |
| // expected |
| } |
| } |
| |
| /** |
| * Attempts to start a DataNode with the given operation. Starting |
| * the DataNode should throw an exception. |
| */ |
| void startDataNodeShouldFail(StartupOption operation) { |
| try { |
| cluster.startDataNodes(conf, 1, false, operation, null); // should fail |
| throw new AssertionError("DataNode should have failed to start"); |
| } catch (Exception expected) { |
| // expected |
| assertFalse(cluster.isDataNodeUp()); |
| } |
| } |
| |
| /** |
| */ |
| public void testDistributedUpgrade() throws Exception { |
| File[] baseDirs; |
| int numDirs = 1; |
| UpgradeUtilities.initialize(); |
| |
| // register new upgrade objects (ignore all existing) |
| UpgradeObjectCollection.initialize(); |
| UpgradeObjectCollection.registerUpgrade(new UpgradeObject_Test_Datanode()); |
| UpgradeObjectCollection.registerUpgrade(new UpgradeObject_Test_Namenode()); |
| |
| conf = UpgradeUtilities.initializeStorageStateConf(numDirs); |
| String[] nameNodeDirs = conf.getStrings("dfs.name.dir"); |
| String[] dataNodeDirs = conf.getStrings("dfs.data.dir"); |
| DFSAdmin dfsAdmin = new DFSAdmin(); |
| dfsAdmin.setConf(conf); |
| String[] pars = {"-safemode", "wait"}; |
| |
| log("NameNode start in regular mode when dustributed upgrade is required", numDirs); |
| baseDirs = UpgradeUtilities.createStorageDirs(NAME_NODE, nameNodeDirs, "current"); |
| UpgradeUtilities.createVersionFile(NAME_NODE, baseDirs, |
| new StorageInfo(LAYOUT_VERSION+2, |
| UpgradeUtilities.getCurrentNamespaceID(cluster), |
| UpgradeUtilities.getCurrentFsscTime(cluster))); |
| startNameNodeShouldFail(StartupOption.REGULAR); |
| |
| log("Start NameNode only distributed upgrade", numDirs); |
| cluster = new MiniDFSCluster(conf, 0, StartupOption.UPGRADE); |
| cluster.shutdown(); |
| |
| log("NameNode start in regular mode when dustributed upgrade has been started", numDirs); |
| startNameNodeShouldFail(StartupOption.REGULAR); |
| |
| log("NameNode rollback to the old version that require a dustributed upgrade", numDirs); |
| startNameNodeShouldFail(StartupOption.ROLLBACK); |
| |
| log("Normal distributed upgrade for the cluster", numDirs); |
| cluster = new MiniDFSCluster(conf, 0, StartupOption.UPGRADE); |
| UpgradeUtilities.createStorageDirs(DATA_NODE, dataNodeDirs, "current"); |
| cluster.startDataNodes(conf, 1, false, StartupOption.REGULAR, null); |
| dfsAdmin.run(pars); |
| cluster.shutdown(); |
| |
| // it should be ok to start in regular mode |
| log("NameCluster regular startup after the upgrade", numDirs); |
| cluster = new MiniDFSCluster(conf, 0, StartupOption.REGULAR); |
| cluster.startDataNodes(conf, 1, false, StartupOption.REGULAR, null); |
| cluster.shutdown(); |
| UpgradeUtilities.createEmptyDirs(nameNodeDirs); |
| UpgradeUtilities.createEmptyDirs(dataNodeDirs); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| new TestDistributedUpgrade().testDistributedUpgrade(); |
| LOG.info("=== DONE ==="); |
| } |
| } |
| |
| /** |
| * Upgrade object for data-node |
| */ |
| class UpgradeObject_Test_Datanode extends UpgradeObjectDatanode { |
| public int getVersion() { |
| return LAYOUT_VERSION+1; |
| } |
| |
| public void doUpgrade() throws IOException { |
| this.status = (short)100; |
| getDatanode().namenode.processUpgradeCommand( |
| new UpgradeCommand(UpgradeCommand.UC_ACTION_REPORT_STATUS, |
| getVersion(), getUpgradeStatus())); |
| } |
| |
| public UpgradeCommand startUpgrade() throws IOException { |
| this.status = (short)0; |
| return null; |
| } |
| } |
| |
| /** |
| * Upgrade object for name-node |
| */ |
| class UpgradeObject_Test_Namenode extends UpgradeObjectNamenode { |
| public int getVersion() { |
| return LAYOUT_VERSION+1; |
| } |
| |
| synchronized public UpgradeCommand processUpgradeCommand( |
| UpgradeCommand command) throws IOException { |
| switch(command.action) { |
| case UpgradeCommand.UC_ACTION_REPORT_STATUS: |
| this.status += command.getCurrentStatus()/2; // 2 reports needed |
| break; |
| default: |
| this.status++; |
| } |
| return null; |
| } |
| |
| public UpgradeCommand completeUpgrade() throws IOException { |
| return null; |
| } |
| } |