HDFS-1580. Committing the test case, it was missed in earlier commit.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1210749 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Jitendra Nath Pandey 2011-12-06 02:15:56 +00:00
parent 8c0f2a0d59
commit b981daa07f
1 changed files with 176 additions and 0 deletions

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/**
* 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);
}
}
}