/**
* 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.mapreduce;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.mockito.Matchers.any;
import static org.mockito.Mockito.doAnswer;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.util.ArrayList;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.CellUtil;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.LargeTests;
import org.apache.hadoop.hbase.MiniHBaseCluster;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Delete;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
import org.apache.hadoop.hbase.mapreduce.WALPlayer.HLogKeyValueMapper;
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.apache.hadoop.hbase.util.LauncherSecurityManager;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.Mapper.Context;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
/**
* Basic test for the WALPlayer M/R tool
*/
@Category(LargeTests.class)
public class TestWALPlayer {
private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
private static MiniHBaseCluster cluster;
@BeforeClass
public static void beforeClass() throws Exception {
cluster = TEST_UTIL.startMiniCluster();
TEST_UTIL.startMiniMapReduceCluster();
}
@AfterClass
public static void afterClass() throws Exception {
TEST_UTIL.shutdownMiniMapReduceCluster();
TEST_UTIL.shutdownMiniCluster();
}
/**
* Simple end-to-end test
* @throws Exception
*/
@Test
public void testWALPlayer() throws Exception {
final byte[] TABLENAME1 = Bytes.toBytes("testWALPlayer1");
final byte[] TABLENAME2 = Bytes.toBytes("testWALPlayer2");
final byte[] FAMILY = Bytes.toBytes("family");
final byte[] COLUMN1 = Bytes.toBytes("c1");
final byte[] COLUMN2 = Bytes.toBytes("c2");
final byte[] ROW = Bytes.toBytes("row");
Table t1 = TEST_UTIL.createTable(TABLENAME1, FAMILY);
Table t2 = TEST_UTIL.createTable(TABLENAME2, FAMILY);
// put a row into the first table
Put p = new Put(ROW);
p.add(FAMILY, COLUMN1, COLUMN1);
p.add(FAMILY, COLUMN2, COLUMN2);
t1.put(p);
// delete one column
Delete d = new Delete(ROW);
d.deleteColumns(FAMILY, COLUMN1);
t1.delete(d);
// replay the WAL, map table 1 to table 2
HLog log = cluster.getRegionServer(0).getWAL();
log.rollWriter();
String walInputDir = new Path(cluster.getMaster().getMasterFileSystem()
.getRootDir(), HConstants.HREGION_LOGDIR_NAME).toString();
Configuration configuration= TEST_UTIL.getConfiguration();
WALPlayer player = new WALPlayer(configuration);
String optionName="_test_.name";
configuration.set(optionName, "1000");
player.setupTime(configuration, optionName);
assertEquals(1000,configuration.getLong(optionName,0));
assertEquals(0, player.run(new String[] { walInputDir, Bytes.toString(TABLENAME1),
Bytes.toString(TABLENAME2) }));
// verify the WAL was player into table 2
Get g = new Get(ROW);
Result r = t2.get(g);
assertEquals(1, r.size());
assertTrue(CellUtil.matchingQualifier(r.rawCells()[0], COLUMN2));
}
/**
* Test HLogKeyValueMapper setup and map
*/
@Test
public void testHLogKeyValueMapper() throws Exception {
Configuration configuration = new Configuration();
configuration.set(WALPlayer.TABLES_KEY, "table");
HLogKeyValueMapper mapper = new HLogKeyValueMapper();
HLogKey key = mock(HLogKey.class);
when(key.getTablename()).thenReturn(TableName.valueOf("table"));
@SuppressWarnings("unchecked")
Mapper<HLogKey, WALEdit, ImmutableBytesWritable, KeyValue>.Context context =
mock(Context.class);
when(context.getConfiguration()).thenReturn(configuration);
WALEdit value = mock(WALEdit.class);
ArrayList<Cell> values = new ArrayList<Cell>();
KeyValue kv1 = mock(KeyValue.class);
when(kv1.getFamily()).thenReturn(Bytes.toBytes("family"));
when(kv1.getRow()).thenReturn(Bytes.toBytes("row"));
values.add(kv1);
when(value.getCells()).thenReturn(values);
mapper.setup(context);
doAnswer(new Answer<Void>() {
@Override
public Void answer(InvocationOnMock invocation) throws Throwable {
ImmutableBytesWritable writer = (ImmutableBytesWritable) invocation.getArguments()[0];
KeyValue key = (KeyValue) invocation.getArguments()[1];
assertEquals("row", Bytes.toString(writer.get()));
assertEquals("row", Bytes.toString(key.getRow()));
return null;
}
}).when(context).write(any(ImmutableBytesWritable.class), any(KeyValue.class));
mapper.map(key, value, context);
}
/**
* Test main method
*/
@Test
public void testMainMethod() throws Exception {
PrintStream oldPrintStream = System.err;
SecurityManager SECURITY_MANAGER = System.getSecurityManager();
LauncherSecurityManager newSecurityManager= new LauncherSecurityManager();
System.setSecurityManager(newSecurityManager);
ByteArrayOutputStream data = new ByteArrayOutputStream();
String[] args = {};
System.setErr(new PrintStream(data));
try {
System.setErr(new PrintStream(data));
try {
WALPlayer.main(args);
fail("should be SecurityException");
} catch (SecurityException e) {
assertEquals(-1, newSecurityManager.getExitCode());
assertTrue(data.toString().contains("ERROR: Wrong number of arguments:"));
assertTrue(data.toString().contains("Usage: WALPlayer [options] <wal inputdir>" +
" <tables> [<tableMappings>]"));
assertTrue(data.toString().contains("-Dhlog.bulk.output=/path/for/output"));
}
} finally {
System.setErr(oldPrintStream);
System.setSecurityManager(SECURITY_MANAGER);
}
}
}