HDFS-2100. Improve TestStorageRestore. Contributed by Aaron T. Myers.
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1138262 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Aaron Myers
parent
3f190b3e1a
commit
a851ce5dcb
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@ -519,6 +519,8 @@ Trunk (unreleased changes)
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HDFS-1568. Improve the log messages in DataXceiver. (Joey Echeverria via
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szetszwo)
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HDFS-2100. Improve TestStorageRestore. (atm)
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OPTIMIZATIONS
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HDFS-1458. Improve checkpoint performance by avoiding unnecessary image
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@ -18,6 +18,10 @@
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package org.apache.hadoop.hdfs.server.namenode;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertFalse;
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import static org.junit.Assert.assertTrue;
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import java.io.DataInputStream;
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import java.io.EOFException;
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import java.io.File;
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@ -28,32 +32,35 @@ import java.security.MessageDigest;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.Random;
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import junit.framework.TestCase;
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import java.util.Set;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.hadoop.cli.CLITestCmdDFS;
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import org.apache.hadoop.cli.util.*;
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import org.apache.hadoop.cli.util.CLICommandDFSAdmin;
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import org.apache.hadoop.cli.util.CommandExecutor;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.fs.FSDataOutputStream;
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import org.apache.hadoop.fs.FileSystem;
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import org.apache.hadoop.fs.FileUtil;
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import org.apache.hadoop.fs.Path;
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import org.apache.hadoop.hdfs.DFSConfigKeys;
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import org.apache.hadoop.hdfs.HdfsConfiguration;
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import org.apache.hadoop.hdfs.MiniDFSCluster;
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import org.apache.hadoop.hdfs.server.common.Storage;
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import org.apache.hadoop.hdfs.server.common.Storage.StorageDirectory;
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import org.apache.hadoop.hdfs.server.namenode.NNStorage.NameNodeDirType;
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import org.apache.hadoop.hdfs.server.namenode.NNStorage.NameNodeFile;
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import org.apache.hadoop.hdfs.DFSConfigKeys;
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import org.junit.After;
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import org.junit.Before;
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import org.junit.Test;
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import com.google.common.collect.ImmutableSet;
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/**
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* Startup and checkpoint tests
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*
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*/
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public class TestStorageRestore extends TestCase {
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public class TestStorageRestore {
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public static final String NAME_NODE_HOST = "localhost:";
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public static final String NAME_NODE_HTTP_HOST = "0.0.0.0:";
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private static final Log LOG =
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@ -78,8 +85,8 @@ public class TestStorageRestore extends TestCase {
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stm.close();
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}
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protected void setUp() throws Exception {
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@Before
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public void setUpNameDirs() throws Exception {
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config = new HdfsConfiguration();
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hdfsDir = new File(MiniDFSCluster.getBaseDirectory()).getCanonicalFile();
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if ( hdfsDir.exists() && !FileUtil.fullyDelete(hdfsDir) ) {
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@ -116,7 +123,8 @@ public class TestStorageRestore extends TestCase {
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/**
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* clean up
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*/
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public void tearDown() throws Exception {
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@After
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public void cleanUpNameDirs() throws Exception {
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if (hdfsDir.exists() && !FileUtil.fullyDelete(hdfsDir) ) {
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throw new IOException("Could not delete hdfs directory in tearDown '" + hdfsDir + "'");
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}
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@ -125,12 +133,13 @@ public class TestStorageRestore extends TestCase {
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/**
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* invalidate storage by removing storage directories
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*/
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public void invalidateStorage(FSImage fi) throws IOException {
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public void invalidateStorage(FSImage fi, Set<File> filesToInvalidate) throws IOException {
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ArrayList<StorageDirectory> al = new ArrayList<StorageDirectory>(2);
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Iterator<StorageDirectory> it = fi.getStorage().dirIterator();
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while(it.hasNext()) {
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StorageDirectory sd = it.next();
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if(sd.getRoot().equals(path2) || sd.getRoot().equals(path3)) {
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if(filesToInvalidate.contains(sd.getRoot())) {
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LOG.info("causing IO error on " + sd.getRoot());
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al.add(sd);
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}
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}
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@ -142,16 +151,16 @@ public class TestStorageRestore extends TestCase {
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* test
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*/
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public void printStorages(FSImage fs) {
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LOG.info("current storages and corresoponding sizes:");
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LOG.info("current storages and corresponding sizes:");
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for(Iterator<StorageDirectory> it = fs.getStorage().dirIterator(); it.hasNext(); ) {
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StorageDirectory sd = it.next();
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if(sd.getStorageDirType().isOfType(NameNodeDirType.IMAGE)) {
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File imf = fs.getStorage().getStorageFile(sd, NameNodeFile.IMAGE);
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File imf = NNStorage.getStorageFile(sd, NameNodeFile.IMAGE);
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LOG.info(" image file " + imf.getAbsolutePath() + "; len = " + imf.length());
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}
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if(sd.getStorageDirType().isOfType(NameNodeDirType.EDITS)) {
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File edf = fs.getStorage().getStorageFile(sd, NameNodeFile.EDITS);
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File edf = NNStorage.getStorageFile(sd, NameNodeFile.EDITS);
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LOG.info(" edits file " + edf.getAbsolutePath() + "; len = " + edf.length());
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}
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}
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@ -282,6 +291,7 @@ public class TestStorageRestore extends TestCase {
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* 8. verify that all the image and edits files are the same.
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*/
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@SuppressWarnings("deprecation")
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@Test
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public void testStorageRestore() throws Exception {
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int numDatanodes = 2;
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cluster = new MiniDFSCluster.Builder(config).numDataNodes(numDatanodes)
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@ -299,7 +309,7 @@ public class TestStorageRestore extends TestCase {
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System.out.println("****testStorageRestore: file test written, invalidating storage...");
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invalidateStorage(cluster.getNameNode().getFSImage());
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invalidateStorage(cluster.getNameNode().getFSImage(), ImmutableSet.of(path2, path3));
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//secondary.doCheckpoint(); // this will cause storages to be removed.
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printStorages(cluster.getNameNode().getFSImage());
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System.out.println("****testStorageRestore: storage invalidated + doCheckpoint");
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@ -331,6 +341,7 @@ public class TestStorageRestore extends TestCase {
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* Test dfsadmin -restoreFailedStorage command
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* @throws Exception
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*/
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@Test
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public void testDfsAdminCmd() throws Exception {
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cluster = new MiniDFSCluster.Builder(config).
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numDataNodes(2).
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@ -362,7 +373,7 @@ public class TestStorageRestore extends TestCase {
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restore = fsi.getStorage().getRestoreFailedStorage();
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assertTrue("After set false call restore is " + restore, restore);
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// run one more time - no change in value
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// run one more time - no change in value
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cmd = "-fs NAMENODE -restoreFailedStorage check";
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CommandExecutor.Result cmdResult = executor.executeCommand(cmd);
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restore = fsi.getStorage().getRestoreFailedStorage();
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@ -376,4 +387,67 @@ public class TestStorageRestore extends TestCase {
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cluster.shutdown();
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}
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}
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/**
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* Test to simulate interleaved checkpointing by 2 2NNs after a storage
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* directory has been taken offline. The first will cause the directory to
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* come back online, but it won't have any valid contents. The second 2NN will
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* then try to perform a checkpoint. The NN should not serve up the image or
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* edits from the restored (empty) dir.
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*/
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@SuppressWarnings("deprecation")
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@Test
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public void testMultipleSecondaryCheckpoint() throws IOException {
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SecondaryNameNode secondary = null;
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try {
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cluster = new MiniDFSCluster.Builder(config).numDataNodes(1)
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.manageNameDfsDirs(false).build();
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cluster.waitActive();
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secondary = new SecondaryNameNode(config);
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FSImage fsImage = cluster.getNameNode().getFSImage();
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printStorages(fsImage);
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FileSystem fs = cluster.getFileSystem();
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Path testPath = new Path("/", "test");
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writeFile(fs, testPath, 2);
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printStorages(fsImage);
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// Take name1 offline
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invalidateStorage(fsImage, ImmutableSet.of(path1));
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// Simulate a 2NN beginning a checkpoint, but not finishing. This will
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// cause name1 to be restored.
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cluster.getNameNode().rollEditLog();
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printStorages(fsImage);
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// Now another 2NN comes along to do a full checkpoint.
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secondary.doCheckpoint();
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printStorages(fsImage);
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// The created file should still exist in the in-memory FS state after the
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// checkpoint.
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assertTrue("path exists before restart", fs.exists(testPath));
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secondary.shutdown();
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// Restart the NN so it reloads the edits from on-disk.
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cluster.restartNameNode();
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// The created file should still exist after the restart.
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assertTrue("path should still exist after restart", fs.exists(testPath));
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} finally {
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if (cluster != null) {
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cluster.shutdown();
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}
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if (secondary != null) {
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secondary.shutdown();
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}
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}
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}
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}
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