| /** |
| * 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; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.lang.management.ManagementFactory; |
| import java.util.concurrent.ThreadLocalRandom; |
| |
| import javax.management.AttributeNotFoundException; |
| import javax.management.InstanceNotFoundException; |
| import javax.management.MBeanException; |
| import javax.management.MBeanServer; |
| import javax.management.MalformedObjectNameException; |
| import javax.management.ObjectName; |
| import javax.management.ReflectionException; |
| import javax.management.openmbean.CompositeDataSupport; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FSDataOutputStream; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.FileUtil; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hdfs.MiniDFSCluster.DataNodeProperties; |
| import org.apache.hadoop.hdfs.protocol.HdfsConstants.RollingUpgradeAction; |
| import org.apache.hadoop.hdfs.protocol.HdfsConstants.SafeModeAction; |
| import org.apache.hadoop.hdfs.protocol.RollingUpgradeInfo; |
| import org.apache.hadoop.hdfs.qjournal.MiniJournalCluster; |
| import org.apache.hadoop.hdfs.qjournal.MiniQJMHACluster; |
| import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.StartupOption; |
| import org.apache.hadoop.hdfs.server.datanode.DataNode; |
| import org.apache.hadoop.hdfs.server.namenode.FSImage; |
| import org.apache.hadoop.hdfs.server.namenode.NNStorage; |
| import org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode; |
| import org.apache.hadoop.hdfs.server.namenode.TestFileTruncate; |
| import org.apache.hadoop.hdfs.tools.DFSAdmin; |
| import org.apache.hadoop.io.IOUtils; |
| import org.apache.hadoop.test.GenericTestUtils; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotEquals; |
| import static org.junit.Assert.assertNull; |
| |
| /** |
| * This class tests rolling upgrade. |
| */ |
| public class TestRollingUpgrade { |
| private static final Log LOG = LogFactory.getLog(TestRollingUpgrade.class); |
| |
| public static void runCmd(DFSAdmin dfsadmin, boolean success, |
| String... args) throws Exception { |
| if (success) { |
| assertEquals(0, dfsadmin.run(args)); |
| } else { |
| Assert.assertTrue(dfsadmin.run(args) != 0); |
| } |
| } |
| |
| /** |
| * Test DFSAdmin Upgrade Command. |
| */ |
| @Test |
| public void testDFSAdminRollingUpgradeCommands() throws Exception { |
| // start a cluster |
| final Configuration conf = new HdfsConfiguration(); |
| MiniDFSCluster cluster = null; |
| try { |
| cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build(); |
| cluster.waitActive(); |
| |
| final Path foo = new Path("/foo"); |
| final Path bar = new Path("/bar"); |
| final Path baz = new Path("/baz"); |
| |
| { |
| final DistributedFileSystem dfs = cluster.getFileSystem(); |
| final DFSAdmin dfsadmin = new DFSAdmin(conf); |
| dfs.mkdirs(foo); |
| |
| //illegal argument "abc" to rollingUpgrade option |
| runCmd(dfsadmin, false, "-rollingUpgrade", "abc"); |
| |
| checkMxBeanIsNull(); |
| //query rolling upgrade |
| runCmd(dfsadmin, true, "-rollingUpgrade"); |
| |
| //start rolling upgrade |
| dfs.setSafeMode(SafeModeAction.SAFEMODE_ENTER); |
| runCmd(dfsadmin, true, "-rollingUpgrade", "prepare"); |
| dfs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE); |
| |
| //query rolling upgrade |
| runCmd(dfsadmin, true, "-rollingUpgrade", "query"); |
| checkMxBean(); |
| |
| dfs.mkdirs(bar); |
| |
| //finalize rolling upgrade |
| runCmd(dfsadmin, true, "-rollingUpgrade", "finalize"); |
| // RollingUpgradeInfo should be null after finalization, both via |
| // Java API and in JMX |
| assertNull(dfs.rollingUpgrade(RollingUpgradeAction.QUERY)); |
| checkMxBeanIsNull(); |
| |
| dfs.mkdirs(baz); |
| |
| runCmd(dfsadmin, true, "-rollingUpgrade"); |
| |
| // All directories created before upgrade, when upgrade in progress and |
| // after upgrade finalize exists |
| Assert.assertTrue(dfs.exists(foo)); |
| Assert.assertTrue(dfs.exists(bar)); |
| Assert.assertTrue(dfs.exists(baz)); |
| |
| dfs.setSafeMode(SafeModeAction.SAFEMODE_ENTER); |
| dfs.saveNamespace(); |
| dfs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE); |
| } |
| |
| // Ensure directories exist after restart |
| cluster.restartNameNode(); |
| { |
| final DistributedFileSystem dfs = cluster.getFileSystem(); |
| Assert.assertTrue(dfs.exists(foo)); |
| Assert.assertTrue(dfs.exists(bar)); |
| Assert.assertTrue(dfs.exists(baz)); |
| } |
| } finally { |
| if(cluster != null) cluster.shutdown(); |
| } |
| } |
| |
| private static Configuration setConf(Configuration conf, File dir, |
| MiniJournalCluster mjc) { |
| conf.set(DFSConfigKeys.DFS_NAMENODE_NAME_DIR_KEY, dir.getAbsolutePath()); |
| conf.set(DFSConfigKeys.DFS_NAMENODE_EDITS_DIR_KEY, |
| mjc.getQuorumJournalURI("myjournal").toString()); |
| conf.setLong(DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_TXNS_KEY, 0L); |
| return conf; |
| } |
| |
| @Test (timeout = 30000) |
| public void testRollingUpgradeWithQJM() throws Exception { |
| String nnDirPrefix = MiniDFSCluster.getBaseDirectory() + "/nn/"; |
| final File nn1Dir = new File(nnDirPrefix + "image1"); |
| final File nn2Dir = new File(nnDirPrefix + "image2"); |
| |
| LOG.info("nn1Dir=" + nn1Dir); |
| LOG.info("nn2Dir=" + nn2Dir); |
| |
| final Configuration conf = new HdfsConfiguration(); |
| final MiniJournalCluster mjc = new MiniJournalCluster.Builder(conf).build(); |
| mjc.waitActive(); |
| setConf(conf, nn1Dir, mjc); |
| |
| { |
| // Start the cluster once to generate the dfs dirs |
| final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf) |
| .numDataNodes(0) |
| .manageNameDfsDirs(false) |
| .checkExitOnShutdown(false) |
| .build(); |
| // Shutdown the cluster before making a copy of the namenode dir to release |
| // all file locks, otherwise, the copy will fail on some platforms. |
| cluster.shutdown(); |
| } |
| |
| MiniDFSCluster cluster2 = null; |
| try { |
| // Start a second NN pointed to the same quorum. |
| // We need to copy the image dir from the first NN -- or else |
| // the new NN will just be rejected because of Namespace mismatch. |
| FileUtil.fullyDelete(nn2Dir); |
| FileUtil.copy(nn1Dir, FileSystem.getLocal(conf).getRaw(), |
| new Path(nn2Dir.getAbsolutePath()), false, conf); |
| |
| // Start the cluster again |
| final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf) |
| .numDataNodes(0) |
| .format(false) |
| .manageNameDfsDirs(false) |
| .checkExitOnShutdown(false) |
| .build(); |
| |
| final Path foo = new Path("/foo"); |
| final Path bar = new Path("/bar"); |
| final Path baz = new Path("/baz"); |
| |
| final RollingUpgradeInfo info1; |
| { |
| final DistributedFileSystem dfs = cluster.getFileSystem(); |
| dfs.mkdirs(foo); |
| |
| //start rolling upgrade |
| dfs.setSafeMode(SafeModeAction.SAFEMODE_ENTER); |
| info1 = dfs.rollingUpgrade(RollingUpgradeAction.PREPARE); |
| dfs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE); |
| LOG.info("START\n" + info1); |
| |
| //query rolling upgrade |
| assertEquals(info1, dfs.rollingUpgrade(RollingUpgradeAction.QUERY)); |
| |
| dfs.mkdirs(bar); |
| cluster.shutdown(); |
| } |
| |
| // cluster2 takes over QJM |
| final Configuration conf2 = setConf(new Configuration(), nn2Dir, mjc); |
| cluster2 = new MiniDFSCluster.Builder(conf2) |
| .numDataNodes(0) |
| .format(false) |
| .manageNameDfsDirs(false) |
| .build(); |
| final DistributedFileSystem dfs2 = cluster2.getFileSystem(); |
| |
| // Check that cluster2 sees the edits made on cluster1 |
| Assert.assertTrue(dfs2.exists(foo)); |
| Assert.assertTrue(dfs2.exists(bar)); |
| Assert.assertFalse(dfs2.exists(baz)); |
| |
| //query rolling upgrade in cluster2 |
| assertEquals(info1, dfs2.rollingUpgrade(RollingUpgradeAction.QUERY)); |
| |
| dfs2.mkdirs(baz); |
| |
| LOG.info("RESTART cluster 2"); |
| cluster2.restartNameNode(); |
| assertEquals(info1, dfs2.rollingUpgrade(RollingUpgradeAction.QUERY)); |
| Assert.assertTrue(dfs2.exists(foo)); |
| Assert.assertTrue(dfs2.exists(bar)); |
| Assert.assertTrue(dfs2.exists(baz)); |
| |
| //restart cluster with -upgrade should fail. |
| try { |
| cluster2.restartNameNode("-upgrade"); |
| } catch(IOException e) { |
| LOG.info("The exception is expected.", e); |
| } |
| |
| LOG.info("RESTART cluster 2 again"); |
| cluster2.restartNameNode(); |
| assertEquals(info1, dfs2.rollingUpgrade(RollingUpgradeAction.QUERY)); |
| Assert.assertTrue(dfs2.exists(foo)); |
| Assert.assertTrue(dfs2.exists(bar)); |
| Assert.assertTrue(dfs2.exists(baz)); |
| |
| //finalize rolling upgrade |
| final RollingUpgradeInfo finalize = dfs2.rollingUpgrade( |
| RollingUpgradeAction.FINALIZE); |
| Assert.assertTrue(finalize.isFinalized()); |
| |
| LOG.info("RESTART cluster 2 with regular startup option"); |
| cluster2.getNameNodeInfos()[0].setStartOpt(StartupOption.REGULAR); |
| cluster2.restartNameNode(); |
| Assert.assertTrue(dfs2.exists(foo)); |
| Assert.assertTrue(dfs2.exists(bar)); |
| Assert.assertTrue(dfs2.exists(baz)); |
| } finally { |
| if (cluster2 != null) cluster2.shutdown(); |
| } |
| } |
| |
| private static CompositeDataSupport getBean() |
| throws MalformedObjectNameException, MBeanException, |
| AttributeNotFoundException, InstanceNotFoundException, |
| ReflectionException { |
| MBeanServer mbs = ManagementFactory.getPlatformMBeanServer(); |
| ObjectName mxbeanName = |
| new ObjectName("Hadoop:service=NameNode,name=NameNodeInfo"); |
| return (CompositeDataSupport)mbs.getAttribute(mxbeanName, |
| "RollingUpgradeStatus"); |
| } |
| |
| private static void checkMxBeanIsNull() throws Exception { |
| CompositeDataSupport ruBean = getBean(); |
| assertNull(ruBean); |
| } |
| |
| private static void checkMxBean() throws Exception { |
| CompositeDataSupport ruBean = getBean(); |
| assertNotEquals(0l, ruBean.get("startTime")); |
| assertEquals(0l, ruBean.get("finalizeTime")); |
| } |
| |
| @Test |
| public void testRollback() throws Exception { |
| // start a cluster |
| final Configuration conf = new HdfsConfiguration(); |
| MiniDFSCluster cluster = null; |
| try { |
| cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build(); |
| cluster.waitActive(); |
| |
| final Path foo = new Path("/foo"); |
| final Path bar = new Path("/bar"); |
| cluster.getFileSystem().mkdirs(foo); |
| |
| final Path file = new Path(foo, "file"); |
| final byte[] data = new byte[1024]; |
| ThreadLocalRandom.current().nextBytes(data); |
| final FSDataOutputStream out = cluster.getFileSystem().create(file); |
| out.write(data, 0, data.length); |
| out.close(); |
| |
| checkMxBeanIsNull(); |
| startRollingUpgrade(foo, bar, file, data, cluster); |
| checkMxBean(); |
| cluster.getFileSystem().rollEdits(); |
| cluster.getFileSystem().rollEdits(); |
| rollbackRollingUpgrade(foo, bar, file, data, cluster); |
| checkMxBeanIsNull(); |
| |
| startRollingUpgrade(foo, bar, file, data, cluster); |
| cluster.getFileSystem().rollEdits(); |
| cluster.getFileSystem().rollEdits(); |
| rollbackRollingUpgrade(foo, bar, file, data, cluster); |
| |
| startRollingUpgrade(foo, bar, file, data, cluster); |
| cluster.restartNameNode(); |
| rollbackRollingUpgrade(foo, bar, file, data, cluster); |
| |
| startRollingUpgrade(foo, bar, file, data, cluster); |
| cluster.restartNameNode(); |
| rollbackRollingUpgrade(foo, bar, file, data, cluster); |
| |
| startRollingUpgrade(foo, bar, file, data, cluster); |
| rollbackRollingUpgrade(foo, bar, file, data, cluster); |
| |
| startRollingUpgrade(foo, bar, file, data, cluster); |
| rollbackRollingUpgrade(foo, bar, file, data, cluster); |
| } finally { |
| if(cluster != null) cluster.shutdown(); |
| } |
| } |
| |
| private static void startRollingUpgrade(Path foo, Path bar, |
| Path file, byte[] data, |
| MiniDFSCluster cluster) throws IOException { |
| final DistributedFileSystem dfs = cluster.getFileSystem(); |
| |
| //start rolling upgrade |
| dfs.setSafeMode(SafeModeAction.SAFEMODE_ENTER); |
| dfs.rollingUpgrade(RollingUpgradeAction.PREPARE); |
| dfs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE); |
| |
| dfs.mkdirs(bar); |
| Assert.assertTrue(dfs.exists(foo)); |
| Assert.assertTrue(dfs.exists(bar)); |
| |
| //truncate a file |
| final int newLength = ThreadLocalRandom.current().nextInt(data.length - 1) |
| + 1; |
| dfs.truncate(file, newLength); |
| TestFileTruncate.checkBlockRecovery(file, dfs); |
| AppendTestUtil.checkFullFile(dfs, file, newLength, data); |
| } |
| |
| private static void rollbackRollingUpgrade(Path foo, Path bar, |
| Path file, byte[] data, |
| MiniDFSCluster cluster) throws IOException { |
| final DataNodeProperties dnprop = cluster.stopDataNode(0); |
| cluster.restartNameNode("-rollingUpgrade", "rollback"); |
| cluster.restartDataNode(dnprop, true); |
| |
| final DistributedFileSystem dfs = cluster.getFileSystem(); |
| Assert.assertTrue(dfs.exists(foo)); |
| Assert.assertFalse(dfs.exists(bar)); |
| AppendTestUtil.checkFullFile(dfs, file, data.length, data); |
| } |
| |
| @Test |
| public void testDFSAdminDatanodeUpgradeControlCommands() throws Exception { |
| // start a cluster |
| final Configuration conf = new HdfsConfiguration(); |
| MiniDFSCluster cluster = null; |
| try { |
| cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build(); |
| cluster.waitActive(); |
| final DFSAdmin dfsadmin = new DFSAdmin(conf); |
| DataNode dn = cluster.getDataNodes().get(0); |
| |
| // check the datanode |
| final String dnAddr = dn.getDatanodeId().getIpcAddr(false); |
| final String[] args1 = {"-getDatanodeInfo", dnAddr}; |
| runCmd(dfsadmin, true, args1); |
| |
| // issue shutdown to the datanode. |
| final String[] args2 = {"-shutdownDatanode", dnAddr, "upgrade" }; |
| runCmd(dfsadmin, true, args2); |
| |
| // the datanode should be down. |
| GenericTestUtils.waitForThreadTermination( |
| "Async datanode shutdown thread", 100, 10000); |
| Assert.assertFalse("DataNode should exit", dn.isDatanodeUp()); |
| |
| // ping should fail. |
| assertEquals(-1, dfsadmin.run(args1)); |
| } finally { |
| if (cluster != null) cluster.shutdown(); |
| } |
| } |
| |
| @Test (timeout = 300000) |
| public void testFinalize() throws Exception { |
| final Configuration conf = new HdfsConfiguration(); |
| MiniQJMHACluster cluster = null; |
| final Path foo = new Path("/foo"); |
| final Path bar = new Path("/bar"); |
| |
| try { |
| cluster = new MiniQJMHACluster.Builder(conf).build(); |
| MiniDFSCluster dfsCluster = cluster.getDfsCluster(); |
| dfsCluster.waitActive(); |
| |
| // let NN1 tail editlog every 1s |
| dfsCluster.getConfiguration(1).setInt( |
| DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1); |
| dfsCluster.restartNameNode(1); |
| |
| dfsCluster.transitionToActive(0); |
| DistributedFileSystem dfs = dfsCluster.getFileSystem(0); |
| dfs.mkdirs(foo); |
| |
| FSImage fsimage = dfsCluster.getNamesystem(0).getFSImage(); |
| |
| // start rolling upgrade |
| RollingUpgradeInfo info = dfs |
| .rollingUpgrade(RollingUpgradeAction.PREPARE); |
| Assert.assertTrue(info.isStarted()); |
| dfs.mkdirs(bar); |
| |
| queryForPreparation(dfs); |
| |
| // The NN should have a copy of the fsimage in case of rollbacks. |
| Assert.assertTrue(fsimage.hasRollbackFSImage()); |
| |
| info = dfs.rollingUpgrade(RollingUpgradeAction.FINALIZE); |
| Assert.assertTrue(info.isFinalized()); |
| Assert.assertTrue(dfs.exists(foo)); |
| |
| // Once finalized, there should be no more fsimage for rollbacks. |
| Assert.assertFalse(fsimage.hasRollbackFSImage()); |
| |
| // Should have no problem in restart and replaying edits that include |
| // the FINALIZE op. |
| dfsCluster.restartNameNode(0); |
| } finally { |
| if (cluster != null) { |
| cluster.shutdown(); |
| } |
| } |
| } |
| |
| @Test (timeout = 300000) |
| public void testQuery() throws Exception { |
| final Configuration conf = new Configuration(); |
| MiniQJMHACluster cluster = null; |
| try { |
| cluster = new MiniQJMHACluster.Builder(conf).build(); |
| MiniDFSCluster dfsCluster = cluster.getDfsCluster(); |
| dfsCluster.waitActive(); |
| |
| dfsCluster.transitionToActive(0); |
| DistributedFileSystem dfs = dfsCluster.getFileSystem(0); |
| |
| dfsCluster.shutdownNameNode(1); |
| |
| // start rolling upgrade |
| RollingUpgradeInfo info = dfs |
| .rollingUpgrade(RollingUpgradeAction.PREPARE); |
| Assert.assertTrue(info.isStarted()); |
| |
| info = dfs.rollingUpgrade(RollingUpgradeAction.QUERY); |
| Assert.assertFalse(info.createdRollbackImages()); |
| |
| dfsCluster.restartNameNode(1); |
| |
| queryForPreparation(dfs); |
| |
| // The NN should have a copy of the fsimage in case of rollbacks. |
| Assert.assertTrue(dfsCluster.getNamesystem(0).getFSImage() |
| .hasRollbackFSImage()); |
| } finally { |
| if (cluster != null) { |
| cluster.shutdown(); |
| } |
| } |
| } |
| |
| @Test (timeout = 300000) |
| public void testQueryAfterRestart() throws IOException, InterruptedException { |
| final Configuration conf = new Configuration(); |
| MiniDFSCluster cluster = null; |
| try { |
| cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build(); |
| cluster.waitActive(); |
| DistributedFileSystem dfs = cluster.getFileSystem(); |
| |
| dfs.setSafeMode(SafeModeAction.SAFEMODE_ENTER); |
| // start rolling upgrade |
| dfs.rollingUpgrade(RollingUpgradeAction.PREPARE); |
| queryForPreparation(dfs); |
| dfs.setSafeMode(SafeModeAction.SAFEMODE_ENTER); |
| dfs.saveNamespace(); |
| dfs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE); |
| |
| cluster.restartNameNodes(); |
| dfs.rollingUpgrade(RollingUpgradeAction.QUERY); |
| } finally { |
| if (cluster != null) { |
| cluster.shutdown(); |
| } |
| } |
| } |
| |
| @Test(timeout = 300000) |
| public void testCheckpoint() throws IOException, InterruptedException { |
| final Configuration conf = new Configuration(); |
| conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1); |
| conf.setInt(DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_PERIOD_KEY, 1); |
| |
| MiniQJMHACluster cluster = null; |
| final Path foo = new Path("/foo"); |
| |
| try { |
| cluster = new MiniQJMHACluster.Builder(conf).build(); |
| MiniDFSCluster dfsCluster = cluster.getDfsCluster(); |
| dfsCluster.waitActive(); |
| |
| dfsCluster.transitionToActive(0); |
| DistributedFileSystem dfs = dfsCluster.getFileSystem(0); |
| |
| // start rolling upgrade |
| RollingUpgradeInfo info = dfs |
| .rollingUpgrade(RollingUpgradeAction.PREPARE); |
| Assert.assertTrue(info.isStarted()); |
| |
| queryForPreparation(dfs); |
| |
| dfs.mkdirs(foo); |
| long txid = dfs.rollEdits(); |
| Assert.assertTrue(txid > 0); |
| |
| int retries = 0; |
| while (++retries < 5) { |
| NNStorage storage = dfsCluster.getNamesystem(1).getFSImage() |
| .getStorage(); |
| if (storage.getFsImageName(txid - 1) != null) { |
| return; |
| } |
| Thread.sleep(1000); |
| } |
| Assert.fail("new checkpoint does not exist"); |
| |
| } finally { |
| if (cluster != null) { |
| cluster.shutdown(); |
| } |
| } |
| } |
| |
| static void queryForPreparation(DistributedFileSystem dfs) throws IOException, |
| InterruptedException { |
| RollingUpgradeInfo info; |
| int retries = 0; |
| while (++retries < 10) { |
| info = dfs.rollingUpgrade(RollingUpgradeAction.QUERY); |
| if (info.createdRollbackImages()) { |
| break; |
| } |
| Thread.sleep(1000); |
| } |
| |
| if (retries >= 10) { |
| Assert.fail("Query return false"); |
| } |
| } |
| |
| /** |
| * In non-HA setup, after rolling upgrade prepare, the Secondary NN should |
| * still be able to do checkpoint |
| */ |
| @Test |
| public void testCheckpointWithSNN() throws Exception { |
| MiniDFSCluster cluster = null; |
| DistributedFileSystem dfs = null; |
| SecondaryNameNode snn = null; |
| |
| try { |
| Configuration conf = new HdfsConfiguration(); |
| cluster = new MiniDFSCluster.Builder(conf).build(); |
| cluster.waitActive(); |
| |
| conf.set(DFSConfigKeys.DFS_NAMENODE_SECONDARY_HTTP_ADDRESS_KEY, |
| "0.0.0.0:0"); |
| snn = new SecondaryNameNode(conf); |
| |
| dfs = cluster.getFileSystem(); |
| dfs.mkdirs(new Path("/test/foo")); |
| |
| snn.doCheckpoint(); |
| |
| //start rolling upgrade |
| dfs.setSafeMode(SafeModeAction.SAFEMODE_ENTER); |
| dfs.rollingUpgrade(RollingUpgradeAction.PREPARE); |
| dfs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE); |
| |
| dfs.mkdirs(new Path("/test/bar")); |
| // do checkpoint in SNN again |
| snn.doCheckpoint(); |
| } finally { |
| IOUtils.cleanup(null, dfs); |
| if (snn != null) { |
| snn.shutdown(); |
| } |
| if (cluster != null) { |
| cluster.shutdown(); |
| } |
| } |
| } |
| } |
