Author: jitendra
Date: Tue Dec 6 02:15:56 2011
New Revision: 1210749
URL: http://svn.apache.org/viewvc?rev=1210749&view=rev
Log:
HDFS-1580. Committing the test case, it was missed in earlier commit.
Added:
hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestGenericJournalConf.java
Added:
hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestGenericJournalConf.java
URL:
http://svn.apache.org/viewvc/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestGenericJournalConf.java?rev=1210749&view=auto
==============================================================================
---
hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestGenericJournalConf.java
(added)
+++
hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestGenericJournalConf.java
Tue Dec 6 02:15:56 2011
@@ -0,0 +1,176 @@
+/**
+ * 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.namenode;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import static org.mockito.Mockito.mock;
+import static org.junit.Assert.*;
+import org.apache.hadoop.hdfs.MiniDFSCluster;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hdfs.DFSConfigKeys;
+import org.apache.hadoop.io.Writable;
+
+import java.net.URI;
+import java.io.IOException;
+
+public class TestGenericJournalConf {
+ /**
+ * Test that an exception is thrown if a journal class doesn't exist
+ * in the configuration
+ */
+ @Test(expected=IllegalArgumentException.class)
+ public void testNotConfigured() throws Exception {
+ MiniDFSCluster cluster = null;
+ Configuration conf = new Configuration();
+
+ conf.set(DFSConfigKeys.DFS_NAMENODE_EDITS_DIR_KEY,
+ "dummy://test");
+ try {
+ cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build();
+ cluster.waitActive();
+ } finally {
+ if (cluster != null) {
+ cluster.shutdown();
+ }
+ }
+ }
+
+ /**
+ * Test that an exception is thrown if a journal class doesn't
+ * exist in the classloader.
+ */
+ @Test(expected=IllegalArgumentException.class)
+ public void testClassDoesntExist() throws Exception {
+ MiniDFSCluster cluster = null;
+ Configuration conf = new Configuration();
+
+ conf.set(DFSConfigKeys.DFS_NAMENODE_EDITS_PLUGIN_PREFIX + ".dummy",
+ "org.apache.hadoop.nonexistent");
+ conf.set(DFSConfigKeys.DFS_NAMENODE_EDITS_DIR_KEY,
+ "dummy://test");
+
+ try {
+ cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build();
+ cluster.waitActive();
+ } finally {
+ if (cluster != null) {
+ cluster.shutdown();
+ }
+ }
+ }
+
+ /**
+ * Test that a implementation of JournalManager without a
+ * (Configuration,URI) constructor throws an exception
+ */
+ @Test
+ public void testBadConstructor() throws Exception {
+ MiniDFSCluster cluster = null;
+ Configuration conf = new Configuration();
+
+ conf.set(DFSConfigKeys.DFS_NAMENODE_EDITS_PLUGIN_PREFIX + ".dummy",
+ BadConstructorJournalManager.class.getName());
+ conf.set(DFSConfigKeys.DFS_NAMENODE_EDITS_DIR_KEY,
+ "dummy://test");
+ try {
+ cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build();
+ cluster.waitActive();
+ fail("Should have failed before this point");
+ } catch (IllegalArgumentException iae) {
+ if (!iae.getMessage().contains("Unable to construct journal")) {
+ fail("Should have failed with unable to construct exception");
+ }
+ } finally {
+ if (cluster != null) {
+ cluster.shutdown();
+ }
+ }
+ }
+
+ /**
+ * Test that a dummy implementation of JournalManager can
+ * be initialized on startup
+ */
+ @Test
+ public void testDummyJournalManager() throws Exception {
+ MiniDFSCluster cluster = null;
+ Configuration conf = new Configuration();
+
+ conf.set(DFSConfigKeys.DFS_NAMENODE_EDITS_PLUGIN_PREFIX + ".dummy",
+ DummyJournalManager.class.getName());
+ conf.set(DFSConfigKeys.DFS_NAMENODE_EDITS_DIR_KEY,
+ "dummy://test");
+ try {
+ cluster = new MiniDFSCluster.Builder(conf).numDataNodes(0).build();
+ cluster.waitActive();
+ } finally {
+ if (cluster != null) {
+ cluster.shutdown();
+ }
+ }
+ }
+
+ public static class DummyJournalManager implements JournalManager {
+ public DummyJournalManager(Configuration conf, URI u) {}
+
+ @Override
+ public EditLogOutputStream startLogSegment(long txId) throws IOException {
+ return mock(EditLogOutputStream.class);
+ }
+
+ @Override
+ public void finalizeLogSegment(long firstTxId, long lastTxId)
+ throws IOException {
+ // noop
+ }
+
+ @Override
+ public EditLogInputStream getInputStream(long fromTxnId)
+ throws IOException {
+ return null;
+ }
+
+ @Override
+ public long getNumberOfTransactions(long fromTxnId)
+ throws IOException {
+ return 0;
+ }
+
+ @Override
+ public void setOutputBufferCapacity(int size) {}
+
+ @Override
+ public void purgeLogsOlderThan(long minTxIdToKeep)
+ throws IOException {}
+
+ @Override
+ public void recoverUnfinalizedSegments() throws IOException {}
+
+ @Override
+ public void close() throws IOException {}
+ }
+
+ public static class BadConstructorJournalManager extends DummyJournalManager
{
+ public BadConstructorJournalManager() {
+ super(null, null);
+ }
+ }
+}
