/*
* Copyright 2010 The Apache Software Foundation
*
* 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.hbase.replication;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.regionserver.wal.HLog;
import org.apache.hadoop.hbase.regionserver.wal.HLogKey;
import org.apache.hadoop.hbase.regionserver.wal.WALEdit;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.BeforeClass;
import org.junit.Test;
public class TestReplicationSource {
private static final Log LOG =
LogFactory.getLog(TestReplicationSource.class);
private final static HBaseTestingUtility TEST_UTIL =
new HBaseTestingUtility();
private static FileSystem FS;
private static Path oldLogDir;
private static Path logDir;
private static Configuration conf = HBaseConfiguration.create();
/**
* @throws java.lang.Exception
*/
@BeforeClass
public static void setUpBeforeClass() throws Exception {
TEST_UTIL.startMiniDFSCluster(1);
FS = TEST_UTIL.getDFSCluster().getFileSystem();
oldLogDir = new Path(FS.getHomeDirectory(),
HConstants.HREGION_OLDLOGDIR_NAME);
if (FS.exists(oldLogDir)) FS.delete(oldLogDir, true);
logDir = new Path(FS.getHomeDirectory(),
HConstants.HREGION_LOGDIR_NAME);
if (FS.exists(logDir)) FS.delete(logDir, true);
}
/**
* Sanity check that we can move logs around while we are reading
* from them. Should this test fail, ReplicationSource would have a hard
* time reading logs that are being archived.
* @throws Exception
*/
@Test
public void testLogMoving() throws Exception{
Path logPath = new Path(logDir, "log");
if (!FS.exists(logDir)) FS.mkdirs(logDir);
if (!FS.exists(oldLogDir)) FS.mkdirs(oldLogDir);
HLog.Writer writer = HLog.createWriter(FS, logPath, conf);
for(int i = 0; i < 3; i++) {
byte[] b = Bytes.toBytes(Integer.toString(i));
KeyValue kv = new KeyValue(b,b,b);
WALEdit edit = new WALEdit();
edit.add(kv);
HLogKey key = new HLogKey(b, b, 0, 0, HConstants.DEFAULT_CLUSTER_ID);
writer.append(new HLog.Entry(key, edit));
writer.sync();
}
writer.close();
HLog.Reader reader = HLog.getReader(FS, logPath, conf);
HLog.Entry entry = reader.next();
assertNotNull(entry);
Path oldLogPath = new Path(oldLogDir, "log");
FS.rename(logPath, oldLogPath);
entry = reader.next();
assertNotNull(entry);
entry = reader.next();
entry = reader.next();
assertNull(entry);
}
}