HDFS-7575. Upgrade should generate a unique storage ID for each volume. (Contributed by Arpit Agarwal)
This commit is contained in:
Arpit Agarwal
parent
825923f7b9
commit
d34074e237
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@ -37,6 +37,7 @@ import org.apache.hadoop.hdfs.HdfsConfiguration;
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import org.apache.hadoop.hdfs.protocol.Block;
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import org.apache.hadoop.hdfs.protocol.HdfsConstants;
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import org.apache.hadoop.hdfs.protocol.LayoutVersion;
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import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeStorageInfo;
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import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.NodeType;
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import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.StartupOption;
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import org.apache.hadoop.hdfs.server.common.InconsistentFSStateException;
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@ -142,11 +143,20 @@ public class DataStorage extends Storage {
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this.datanodeUuid = newDatanodeUuid;
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}
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/** Create an ID for this storage. */
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public synchronized void createStorageID(StorageDirectory sd) {
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if (sd.getStorageUuid() == null) {
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/** Create an ID for this storage.
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* @return true if a new storage ID was generated.
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* */
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public synchronized boolean createStorageID(
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StorageDirectory sd, boolean regenerateStorageIds) {
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final String oldStorageID = sd.getStorageUuid();
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if (oldStorageID == null || regenerateStorageIds) {
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sd.setStorageUuid(DatanodeStorage.generateUuid());
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LOG.info("Generated new storageID " + sd.getStorageUuid() +
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" for directory " + sd.getRoot() +
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(oldStorageID == null ? "" : (" to replace " + oldStorageID)));
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return true;
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}
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return false;
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}
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/**
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@ -677,20 +687,25 @@ public class DataStorage extends Storage {
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+ sd.getRoot().getCanonicalPath() + ": namenode clusterID = "
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+ nsInfo.getClusterID() + "; datanode clusterID = " + getClusterID());
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}
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// After addition of the federation feature, ctime check is only
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// meaningful at BlockPoolSliceStorage level.
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// regular start up.
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// Clusters previously upgraded from layout versions earlier than
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// ADD_DATANODE_AND_STORAGE_UUIDS failed to correctly generate a
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// new storage ID. We check for that and fix it now.
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boolean haveValidStorageId =
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DataNodeLayoutVersion.supports(
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LayoutVersion.Feature.ADD_DATANODE_AND_STORAGE_UUIDS, layoutVersion) &&
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DatanodeStorage.isValidStorageId(sd.getStorageUuid());
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// regular start up.
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if (this.layoutVersion == HdfsConstants.DATANODE_LAYOUT_VERSION) {
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createStorageID(sd);
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createStorageID(sd, !haveValidStorageId);
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return; // regular startup
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}
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// do upgrade
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if (this.layoutVersion > HdfsConstants.DATANODE_LAYOUT_VERSION) {
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doUpgrade(datanode, sd, nsInfo); // upgrade
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createStorageID(sd);
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createStorageID(sd, !haveValidStorageId);
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return;
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}
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@ -47,6 +47,7 @@ public class DatanodeStorage {
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private final String storageID;
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private final State state;
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private final StorageType storageType;
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private static final String STORAGE_ID_PREFIX = "DS-";
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/**
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* Create a storage with {@link State#NORMAL} and {@link StorageType#DEFAULT}.
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@ -80,7 +81,23 @@ public class DatanodeStorage {
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* @return unique storage ID
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*/
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public static String generateUuid() {
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return "DS-" + UUID.randomUUID();
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return STORAGE_ID_PREFIX + UUID.randomUUID();
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}
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/**
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* Verify that a given string is a storage ID in the "DS-..uuid.." format.
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*/
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public static boolean isValidStorageId(final String storageID) {
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try {
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// Attempt to parse the UUID.
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if (storageID != null && storageID.indexOf(STORAGE_ID_PREFIX) == 0) {
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UUID.fromString(storageID.substring(STORAGE_ID_PREFIX.length()));
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return true;
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}
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} catch (IllegalArgumentException iae) {
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}
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return false;
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}
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@Override
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@ -24,7 +24,6 @@ import static org.junit.Assert.fail;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.FileReader;
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import java.io.IOException;
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@ -91,6 +90,10 @@ public class TestDFSUpgradeFromImage {
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}
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}
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public interface ClusterVerifier {
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public void verifyClusterPostUpgrade(final MiniDFSCluster cluster) throws IOException;
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}
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final LinkedList<ReferenceFileInfo> refList = new LinkedList<ReferenceFileInfo>();
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Iterator<ReferenceFileInfo> refIter;
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@ -119,7 +122,7 @@ public class TestDFSUpgradeFromImage {
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if (line.length() <= 0 || line.startsWith("#")) {
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continue;
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}
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String[] arr = line.split("\\s+\t\\s+");
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String[] arr = line.split("\\s+");
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if (arr.length < 1) {
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continue;
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}
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@ -288,7 +291,7 @@ public class TestDFSUpgradeFromImage {
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public void testUpgradeFromRel22Image() throws IOException {
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unpackStorage(HADOOP22_IMAGE, HADOOP_DFS_DIR_TXT);
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upgradeAndVerify(new MiniDFSCluster.Builder(upgradeConf).
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numDataNodes(4));
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numDataNodes(4), null);
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}
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/**
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@ -316,7 +319,7 @@ public class TestDFSUpgradeFromImage {
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// Upgrade should now fail
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try {
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upgradeAndVerify(new MiniDFSCluster.Builder(upgradeConf).
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numDataNodes(4));
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numDataNodes(4), null);
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fail("Upgrade did not fail with bad MD5");
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} catch (IOException ioe) {
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String msg = StringUtils.stringifyException(ioe);
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@ -573,7 +576,7 @@ public class TestDFSUpgradeFromImage {
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} while (dirList.hasMore());
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}
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void upgradeAndVerify(MiniDFSCluster.Builder bld)
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void upgradeAndVerify(MiniDFSCluster.Builder bld, ClusterVerifier verifier)
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throws IOException {
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MiniDFSCluster cluster = null;
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try {
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@ -592,6 +595,10 @@ public class TestDFSUpgradeFromImage {
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}
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recoverAllLeases(dfsClient, new Path("/"));
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verifyFileSystem(dfs);
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if (verifier != null) {
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verifier.verifyClusterPostUpgrade(cluster);
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}
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} finally {
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if (cluster != null) { cluster.shutdown(); }
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}
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@ -611,6 +618,6 @@ public class TestDFSUpgradeFromImage {
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"data1");
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upgradeAndVerify(new MiniDFSCluster.Builder(conf).
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numDataNodes(1).enableManagedDfsDirsRedundancy(false).
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manageDataDfsDirs(false));
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manageDataDfsDirs(false), null);
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}
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}
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@ -43,6 +43,6 @@ public class TestDatanodeLayoutUpgrade {
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System.getProperty("test.build.data") + File.separator +
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"dfs" + File.separator + "name");
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upgrade.upgradeAndVerify(new MiniDFSCluster.Builder(conf).numDataNodes(1)
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.manageDataDfsDirs(false).manageNameDfsDirs(false));
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.manageDataDfsDirs(false).manageNameDfsDirs(false), null);
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}
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}
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@ -0,0 +1,139 @@
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/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.hadoop.hdfs;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.hdfs.server.protocol.DatanodeStorage;
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import org.apache.hadoop.hdfs.server.protocol.StorageReport;
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import org.apache.hadoop.test.GenericTestUtils;
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import org.junit.Test;
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import java.io.File;
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import java.io.IOException;
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import org.apache.hadoop.hdfs.TestDFSUpgradeFromImage.ClusterVerifier;
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import static org.hamcrest.core.Is.is;
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import static org.junit.Assert.assertThat;
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import static org.junit.Assert.assertTrue;
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/**
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* The test verifies that legacy storage IDs in older DataNode
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* images are replaced with UUID-based storage IDs. The startup may
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* or may not involve a Datanode Layout upgrade. Each test case uses
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* the following resource files.
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*
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* 1. testCaseName.tgz - NN and DN directories corresponding
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* to a specific layout version.
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* 2. testCaseName.txt - Text file listing the checksum of each file
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* in the cluster and overall checksum. See
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* TestUpgradeFromImage for the file format.
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*
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* If any test case is renamed then the corresponding resource files must
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* also be renamed.
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*/
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public class TestDatanodeStartupFixesLegacyStorageIDs {
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/**
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* Perform a upgrade using the test image corresponding to
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* testCaseName.
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*
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* @param testCaseName
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* @param expectedStorageId if null, then the upgrade generates a new
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* unique storage ID.
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* @throws IOException
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*/
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private static void runLayoutUpgradeTest(final String testCaseName,
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final String expectedStorageId)
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throws IOException {
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TestDFSUpgradeFromImage upgrade = new TestDFSUpgradeFromImage();
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upgrade.unpackStorage(testCaseName + ".tgz", testCaseName + ".txt");
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Configuration conf = new Configuration(TestDFSUpgradeFromImage.upgradeConf);
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initStorageDirs(conf, testCaseName);
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upgradeAndVerify(upgrade, conf, new ClusterVerifier() {
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@Override
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public void verifyClusterPostUpgrade(MiniDFSCluster cluster) throws IOException {
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// Verify that a GUID-based storage ID was generated.
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final String bpid = cluster.getNamesystem().getBlockPoolId();
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StorageReport[] reports =
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cluster.getDataNodes().get(0).getFSDataset().getStorageReports(bpid);
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assertThat(reports.length, is(1));
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final String storageID = reports[0].getStorage().getStorageID();
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assertTrue(DatanodeStorage.isValidStorageId(storageID));
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if (expectedStorageId != null) {
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assertThat(storageID, is(expectedStorageId));
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}
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}
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});
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}
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private static void initStorageDirs(final Configuration conf,
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final String testName) {
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conf.set(DFSConfigKeys.DFS_DATANODE_DATA_DIR_KEY,
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System.getProperty("test.build.data") + File.separator +
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testName + File.separator + "dfs" + File.separator + "data");
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conf.set(DFSConfigKeys.DFS_NAMENODE_NAME_DIR_KEY,
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System.getProperty("test.build.data") + File.separator +
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testName + File.separator + "dfs" + File.separator + "name");
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}
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private static void upgradeAndVerify(final TestDFSUpgradeFromImage upgrade,
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final Configuration conf,
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final ClusterVerifier verifier)
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throws IOException{
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upgrade.upgradeAndVerify(new MiniDFSCluster.Builder(conf)
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.numDataNodes(1)
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.manageDataDfsDirs(false)
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.manageNameDfsDirs(false), verifier);
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}
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/**
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* Upgrade from 2.2 (no storage IDs per volume) correctly generates
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* GUID-based storage IDs. Test case for HDFS-7575.
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*/
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@Test (timeout=300000)
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public void testUpgradeFrom22FixesStorageIDs() throws IOException {
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runLayoutUpgradeTest(GenericTestUtils.getMethodName(), null);
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}
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/**
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* Startup from a 2.6-layout that has legacy storage IDs correctly
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* generates new storage IDs.
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* Test case for HDFS-7575.
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*/
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@Test (timeout=300000)
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public void testUpgradeFrom22via26FixesStorageIDs() throws IOException {
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runLayoutUpgradeTest(GenericTestUtils.getMethodName(), null);
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}
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/**
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* Startup from a 2.6-layout that already has unique storage IDs does
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* not regenerate the storage IDs.
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* Test case for HDFS-7575.
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*/
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@Test (timeout=300000)
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public void testUpgradeFrom26PreservesStorageIDs() throws IOException {
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// StorageId present in the image testUpgradeFrom26PreservesStorageId.tgz
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runLayoutUpgradeTest(GenericTestUtils.getMethodName(),
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"DS-a0e39cfa-930f-4abd-813c-e22b59223774");
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}
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}
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@ -476,7 +476,7 @@ public class UpgradeUtilities {
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for (int i = 0; i < parent.length; i++) {
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File versionFile = new File(parent[i], "VERSION");
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StorageDirectory sd = new StorageDirectory(parent[i].getParentFile());
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storage.createStorageID(sd);
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storage.createStorageID(sd, false);
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storage.writeProperties(versionFile, sd);
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versionFiles[i] = versionFile;
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File bpDir = BlockPoolSliceStorage.getBpRoot(bpid, parent[i]);
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@ -510,7 +510,7 @@ public class SimulatedFSDataset implements FsDatasetSpi<FsVolumeSpi> {
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public SimulatedFSDataset(DataStorage storage, Configuration conf) {
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if (storage != null) {
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for (int i = 0; i < storage.getNumStorageDirs(); ++i) {
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storage.createStorageID(storage.getStorageDir(i));
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storage.createStorageID(storage.getStorageDir(i), false);
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}
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this.datanodeUuid = storage.getDatanodeUuid();
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} else {
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@ -83,7 +83,7 @@ public class TestFsDatasetImpl {
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private static Storage.StorageDirectory createStorageDirectory(File root) {
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Storage.StorageDirectory sd = new Storage.StorageDirectory(root);
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dsForStorageUuid.createStorageID(sd);
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dsForStorageUuid.createStorageID(sd, false);
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return sd;
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}
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@ -0,0 +1,25 @@
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Similar to hadoop-dfs-dir.txt, except this is used for a datanode layout
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# upgrade test.
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# Uncomment the following line to produce checksum info for a new DFS image.
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#printChecksums
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/f01 4021661486
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/f02 4021661486
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/f03 4021661486
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/f04 4021661486
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overallCRC 3193029345
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Binary file not shown.
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@ -0,0 +1,25 @@
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Similar to hadoop-dfs-dir.txt, except this is used for a datanode layout
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# upgrade test.
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# Uncomment the following line to produce checksum info for a new DFS image.
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#printChecksums
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/f01 4021661486
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/f02 4021661486
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/f03 4021661486
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/f04 4021661486
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overallCRC 3193029345
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Binary file not shown.
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@ -0,0 +1,25 @@
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
|
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
|
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# (the "License"); you may not use this file except in compliance with
|
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# the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Similar to hadoop-dfs-dir.txt, except this is used for a datanode layout
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# upgrade test.
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# Uncomment the following line to produce checksum info for a new DFS image.
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#printChecksums
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/f01 4021661486
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/f02 4021661486
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/f03 4021661486
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/f04 4021661486
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overallCRC 3193029345
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