TestDistributedUpgrade.java
上传用户:quxuerui
上传日期:2018-01-08
资源大小:41811k
文件大小:7k
- /**
- * 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.common;
- 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.hdfs.protocol.FSConstants.LAYOUT_VERSION;
- import org.apache.hadoop.hdfs.MiniDFSCluster;
- import org.apache.hadoop.hdfs.TestDFSUpgradeFromImage;
- import org.apache.hadoop.hdfs.server.common.HdfsConstants.StartupOption;
- import org.apache.hadoop.hdfs.server.datanode.UpgradeObjectDatanode;
- import org.apache.hadoop.hdfs.server.namenode.UpgradeObjectNamenode;
- import org.apache.hadoop.hdfs.server.protocol.UpgradeCommand;
- import org.apache.hadoop.hdfs.tools.DFSAdmin;
- /**
- */
- public class TestDistributedUpgrade extends TestCase {
- private static final Log LOG = LogFactory.getLog(TestDistributedUpgrade.class);
- 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
- // we set manage dirs to true as NN has to start from untar'ed image with
- // nn dirs set to name1 and name2
- cluster = new MiniDFSCluster(0, conf, 0, false, true,
- operation, null); // 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 {
- int numDirs = 1;
- TestDFSUpgradeFromImage testImg = new TestDFSUpgradeFromImage();
- testImg.unpackStorage();
- int numDNs = testImg.numDataNodes;
- // register new upgrade objects (ignore all existing)
- UpgradeObjectCollection.initialize();
- UpgradeObjectCollection.registerUpgrade(new UO_Datanode1());
- UpgradeObjectCollection.registerUpgrade(new UO_Namenode1());
- UpgradeObjectCollection.registerUpgrade(new UO_Datanode2());
- UpgradeObjectCollection.registerUpgrade(new UO_Namenode2());
- UpgradeObjectCollection.registerUpgrade(new UO_Datanode3());
- UpgradeObjectCollection.registerUpgrade(new UO_Namenode3());
- conf = new Configuration();
- if (System.getProperty("test.build.data") == null) { // to test to be run outside of ant
- System.setProperty("test.build.data", "build/test/data");
- }
- conf.setInt("dfs.datanode.scan.period.hours", -1); // block scanning off
- log("NameNode start in regular mode when dustributed upgrade is required", numDirs);
- startNameNodeShouldFail(StartupOption.REGULAR);
- log("Start NameNode only distributed upgrade", numDirs);
- // cluster = new MiniDFSCluster(conf, 0, StartupOption.UPGRADE);
- cluster = new MiniDFSCluster(0, conf, 0, false, true,
- StartupOption.UPGRADE, null);
- 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(0, conf, numDNs, false, true,
- StartupOption.UPGRADE, null);
- DFSAdmin dfsAdmin = new DFSAdmin();
- dfsAdmin.setConf(conf);
- dfsAdmin.run(new String[] {"-safemode", "wait"});
- cluster.shutdown();
- // it should be ok to start in regular mode
- log("NameCluster regular startup after the upgrade", numDirs);
- cluster = new MiniDFSCluster(0, conf, numDNs, false, true,
- StartupOption.REGULAR, null);
- cluster.waitActive();
- cluster.shutdown();
- }
- public static void main(String[] args) throws Exception {
- new TestDistributedUpgrade().testDistributedUpgrade();
- LOG.info("=== DONE ===");
- }
- }
- /**
- * Upgrade object for data-node
- */
- class UO_Datanode extends UpgradeObjectDatanode {
- int version;
- UO_Datanode(int v) {
- this.status = (short)0;
- version = v;
- }
- public int getVersion() {
- return version;
- }
- 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 {
- return null;
- }
- }
- /**
- * Upgrade object for name-node
- */
- class UO_Namenode extends UpgradeObjectNamenode {
- int version;
- UO_Namenode(int v) {
- status = (short)0;
- version = v;
- }
- public int getVersion() {
- return version;
- }
- synchronized public UpgradeCommand processUpgradeCommand(
- UpgradeCommand command) throws IOException {
- switch(command.getAction()) {
- case UpgradeCommand.UC_ACTION_REPORT_STATUS:
- this.status += command.getCurrentStatus()/8; // 4 reports needed
- break;
- default:
- this.status++;
- }
- return null;
- }
- public UpgradeCommand completeUpgrade() throws IOException {
- return null;
- }
- }
- class UO_Datanode1 extends UO_Datanode {
- UO_Datanode1() {
- super(LAYOUT_VERSION+1);
- }
- }
- class UO_Namenode1 extends UO_Namenode {
- UO_Namenode1() {
- super(LAYOUT_VERSION+1);
- }
- }
- class UO_Datanode2 extends UO_Datanode {
- UO_Datanode2() {
- super(LAYOUT_VERSION+2);
- }
- }
- class UO_Namenode2 extends UO_Namenode {
- UO_Namenode2() {
- super(LAYOUT_VERSION+2);
- }
- }
- class UO_Datanode3 extends UO_Datanode {
- UO_Datanode3() {
- super(LAYOUT_VERSION+3);
- }
- }
- class UO_Namenode3 extends UO_Namenode {
- UO_Namenode3() {
- super(LAYOUT_VERSION+3);
- }
- }