/**
* 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 java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.util.ArrayList;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.MediumTests;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.mapreduce.RowCounter.RowCounterMapper;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.LauncherSecurityManager;
import org.apache.hadoop.mapreduce.Counter;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.util.GenericOptionsParser;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;
/**
* Test the rowcounter map reduce job.
*/
@Category(MediumTests.class)
public class TestRowCounter {
final Log LOG = LogFactory.getLog(getClass());
private final static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
private final static String TABLE_NAME = "testRowCounter";
private final static String COL_FAM = "col_fam";
private final static String COL1 = "c1";
private final static String COL2 = "c2";
private final static String COMPOSITE_COLUMN = "C:A:A";
private final static int TOTAL_ROWS = 10;
private final static int ROWS_WITH_ONE_COL = 2;
/**
* @throws java.lang.Exception
*/
@BeforeClass
public static void setUpBeforeClass() throws Exception {
TEST_UTIL.startMiniCluster();
TEST_UTIL.startMiniMapReduceCluster();
Table table = TEST_UTIL.createTable(Bytes.toBytes(TABLE_NAME),
Bytes.toBytes(COL_FAM));
writeRows(table);
table.close();
}
/**
* @throws java.lang.Exception
*/
@AfterClass
public static void tearDownAfterClass() throws Exception {
TEST_UTIL.shutdownMiniCluster();
TEST_UTIL.shutdownMiniMapReduceCluster();
}
/**
* Test a case when no column was specified in command line arguments.
*
* @throws Exception
*/
@Test
public void testRowCounterNoColumn() throws Exception {
String[] args = new String[] {
TABLE_NAME
};
runRowCount(args, 10);
}
/**
* Test a case when the column specified in command line arguments is
* exclusive for few rows.
*
* @throws Exception
*/
@Test
public void testRowCounterExclusiveColumn() throws Exception {
String[] args = new String[] {
TABLE_NAME, COL_FAM + ":" + COL1
};
runRowCount(args, 8);
}
/**
* Test a case when the column specified in command line arguments is
* one for which the qualifier contains colons.
*
* @throws Exception
*/
@Test
public void testRowCounterColumnWithColonInQualifier() throws Exception {
String[] args = new String[] {
TABLE_NAME, COL_FAM + ":" + COMPOSITE_COLUMN
};
runRowCount(args, 8);
}
/**
* Test a case when the column specified in command line arguments is not part
* of first KV for a row.
*
* @throws Exception
*/
@Test
public void testRowCounterHiddenColumn() throws Exception {
String[] args = new String[] {
TABLE_NAME, COL_FAM + ":" + COL2
};
runRowCount(args, 10);
}
/**
* Run the RowCounter map reduce job and verify the row count.
*
* @param args the command line arguments to be used for rowcounter job.
* @param expectedCount the expected row count (result of map reduce job).
* @throws Exception
*/
private void runRowCount(String[] args, int expectedCount) throws Exception {
GenericOptionsParser opts = new GenericOptionsParser(
TEST_UTIL.getConfiguration(), args);
Configuration conf = opts.getConfiguration();
args = opts.getRemainingArgs();
Job job = RowCounter.createSubmittableJob(conf, args);
job.waitForCompletion(true);
assertTrue(job.isSuccessful());
Counter counter = job.getCounters().findCounter(
RowCounterMapper.Counters.ROWS);
assertEquals(expectedCount, counter.getValue());
}
/**
* Writes TOTAL_ROWS number of distinct rows in to the table. Few rows have
* two columns, Few have one.
*
* @param table
* @throws IOException
*/
private static void writeRows(Table table) throws IOException {
final byte[] family = Bytes.toBytes(COL_FAM);
final byte[] value = Bytes.toBytes("abcd");
final byte[] col1 = Bytes.toBytes(COL1);
final byte[] col2 = Bytes.toBytes(COL2);
final byte[] col3 = Bytes.toBytes(COMPOSITE_COLUMN);
ArrayList<Put> rowsUpdate = new ArrayList<Put>();
// write few rows with two columns
int i = 0;
for (; i < TOTAL_ROWS - ROWS_WITH_ONE_COL; i++) {
byte[] row = Bytes.toBytes("row" + i);
Put put = new Put(row);
put.add(family, col1, value);
put.add(family, col2, value);
put.add(family, col3, value);
rowsUpdate.add(put);
}
// write few rows with only one column
for (; i < TOTAL_ROWS; i++) {
byte[] row = Bytes.toBytes("row" + i);
Put put = new Put(row);
put.add(family, col2, value);
rowsUpdate.add(put);
}
table.put(rowsUpdate);
}
/**
* test main method. Import should print help and call System.exit
*/
@Test
public void testImportMain() 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 {
RowCounter.main(args);
fail("should be SecurityException");
} catch (SecurityException e) {
assertEquals(-1, newSecurityManager.getExitCode());
assertTrue(data.toString().contains("Wrong number of parameters:"));
assertTrue(data.toString().contains(
"Usage: RowCounter [options] <tablename> [--range=[startKey],[endKey]] " +
"[<column1> <column2>...]"));
assertTrue(data.toString().contains("-Dhbase.client.scanner.caching=100"));
assertTrue(data.toString().contains("-Dmapreduce.map.speculative=false"));
}
data.reset();
try {
args = new String[2];
args[0] = "table";
args[1] = "--range=1";
RowCounter.main(args);
fail("should be SecurityException");
} catch (SecurityException e) {
assertEquals(-1, newSecurityManager.getExitCode());
assertTrue(data.toString().contains(
"Please specify range in such format as \"--range=a,b\" or, with only one boundary," +
" \"--range=,b\" or \"--range=a,\""));
assertTrue(data.toString().contains(
"Usage: RowCounter [options] <tablename> [--range=[startKey],[endKey]] " +
"[<column1> <column2>...]"));
}
} finally {
System.setErr(oldPrintStream);
System.setSecurityManager(SECURITY_MANAGER);
}
}
}