Author: jing9
Date: Thu Feb 27 05:04:13 2014
New Revision: 1572434
URL: http://svn.apache.org/r1572434
Log:
Add TestRollingUpgradeDowngrade.java for HDFS-6024
Added:
hadoop/common/branches/HDFS-5535/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestRollingUpgradeDowngrade.java
Added:
hadoop/common/branches/HDFS-5535/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestRollingUpgradeDowngrade.java
URL:
http://svn.apache.org/viewvc/hadoop/common/branches/HDFS-5535/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestRollingUpgradeDowngrade.java?rev=1572434&view=auto
==============================================================================
---
hadoop/common/branches/HDFS-5535/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestRollingUpgradeDowngrade.java
(added)
+++
hadoop/common/branches/HDFS-5535/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestRollingUpgradeDowngrade.java
Thu Feb 27 05:04:13 2014
@@ -0,0 +1,103 @@
+/**
+ * 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 static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+
+import java.io.IOException;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.Path;
+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.MiniQJMHACluster;
+import org.apache.hadoop.hdfs.server.common.IncorrectVersionException;
+import org.apache.hadoop.hdfs.server.namenode.NNStorage;
+import org.apache.hadoop.hdfs.server.namenode.NameNodeLayoutVersion;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class TestRollingUpgradeDowngrade {
+
+ @Test(timeout = 300000)
+ public void testDowngrade() throws IOException {
+ 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();
+
+ dfsCluster.transitionToActive(0);
+ DistributedFileSystem dfs = dfsCluster.getFileSystem(0);
+ dfs.mkdirs(foo);
+
+ // start rolling upgrade
+ RollingUpgradeInfo info = dfs
+ .rollingUpgrade(RollingUpgradeAction.PREPARE);
+ Assert.assertTrue(info.isStarted());
+ dfs.mkdirs(bar);
+ dfs.close();
+
+ dfsCluster.restartNameNode(0, true, "-rollingUpgrade", "downgrade");
+ // shutdown NN1
+ dfsCluster.shutdownNameNode(1);
+ dfsCluster.transitionToActive(0);
+
+ dfs = dfsCluster.getFileSystem(0);
+ Assert.assertTrue(dfs.exists(foo));
+ Assert.assertTrue(dfs.exists(bar));
+ } finally {
+ if (cluster != null) {
+ cluster.shutdown();
+ }
+ }
+ }
+
+ /**
+ * Ensure that during downgrade the NN fails to load a fsimage with newer
+ * format.
+ */
+ @Test(expected = IncorrectVersionException.class)
+ public void testRejectNewFsImage() throws IOException {
+ final Configuration conf = new Configuration();
+ MiniDFSCluster cluster = null;
+ try {
+ cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build();
+ cluster.waitActive();
+ DistributedFileSystem fs = cluster.getFileSystem();
+ fs.setSafeMode(SafeModeAction.SAFEMODE_ENTER);
+ fs.saveNamespace();
+ fs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE);
+ NNStorage storage = spy(cluster.getNameNode().getFSImage().getStorage());
+ int futureVersion = NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION - 1;
+ doReturn(futureVersion).when(storage).getServiceLayoutVersion();
+ storage.writeAll();
+ cluster.restartNameNode(0, true, "-rollingUpgrade", "downgrade");
+ } finally {
+ if (cluster != null) {
+ cluster.shutdown();
+ }
+ }
+ }
+}
