/**
* 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.hcatalog.mapreduce;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import junit.framework.TestCase;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hive.cli.CliSessionState;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.metastore.MetaStoreUtils;
import org.apache.hadoop.hive.ql.Driver;
import org.apache.hadoop.hive.ql.session.SessionState;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
import org.apache.hcatalog.HcatTestUtils;
import org.apache.hcatalog.common.HCatConstants;
import org.apache.hcatalog.common.HCatException;
import org.apache.hcatalog.common.HCatUtil;
import org.apache.hcatalog.data.DefaultHCatRecord;
import org.apache.hcatalog.data.schema.HCatFieldSchema;
import org.apache.hcatalog.data.schema.HCatSchema;
import org.apache.pig.ExecType;
import org.apache.pig.PigServer;
import org.apache.pig.data.Tuple;
import org.junit.Test;
public class TestSequenceFileReadWrite extends TestCase {
private static final String TEST_DATA_DIR = System.getProperty("user.dir") +
"/build/test/data/" + TestSequenceFileReadWrite.class.getCanonicalName();
private static final String TEST_WAREHOUSE_DIR = TEST_DATA_DIR + "/warehouse";
private static final String INPUT_FILE_NAME = TEST_DATA_DIR + "/input.data";
private static Driver driver;
private static PigServer server;
private static String[] input;
private static HiveConf hiveConf;
public void Initialize() throws Exception {
hiveConf = new HiveConf(this.getClass());
hiveConf.set(HiveConf.ConfVars.PREEXECHOOKS.varname, "");
hiveConf.set(HiveConf.ConfVars.POSTEXECHOOKS.varname, "");
hiveConf.set(HiveConf.ConfVars.HIVE_SUPPORT_CONCURRENCY.varname, "false");
hiveConf.set(HiveConf.ConfVars.METASTOREWAREHOUSE.varname, TEST_WAREHOUSE_DIR);
driver = new Driver(hiveConf);
SessionState.start(new CliSessionState(hiveConf));
new File(TEST_WAREHOUSE_DIR).mkdirs();
int numRows = 3;
input = new String[numRows];
for (int i = 0; i < numRows; i++) {
String col1 = "a" + i;
String col2 = "b" + i;
input[i] = i + "," + col1 + "," + col2;
}
HcatTestUtils.createTestDataFile(INPUT_FILE_NAME, input);
server = new PigServer(ExecType.LOCAL);
}
@Test
public void testSequenceTableWriteRead() throws Exception {
Initialize();
String createTable = "CREATE TABLE demo_table(a0 int, a1 String, a2 String) STORED AS SEQUENCEFILE";
driver.run("drop table demo_table");
int retCode1 = driver.run(createTable).getResponseCode();
assertTrue(retCode1 == 0);
server.setBatchOn();
server.registerQuery("A = load '"
+ INPUT_FILE_NAME
+ "' using PigStorage(',') as (a0:int,a1:chararray,a2:chararray);");
server.registerQuery("store A into 'demo_table' using org.apache.hcatalog.pig.HCatStorer();");
server.executeBatch();
server.registerQuery("B = load 'demo_table' using org.apache.hcatalog.pig.HCatLoader();");
Iterator<Tuple> XIter = server.openIterator("B");
int numTuplesRead = 0;
while (XIter.hasNext()) {
Tuple t = XIter.next();
assertEquals(3, t.size());
assertEquals(t.get(0).toString(), "" + numTuplesRead);
assertEquals(t.get(1).toString(), "a" + numTuplesRead);
assertEquals(t.get(2).toString(), "b" + numTuplesRead);
numTuplesRead++;
}
assertEquals(input.length, numTuplesRead);
}
@Test
public void testTextTableWriteRead() throws Exception {
Initialize();
String createTable = "CREATE TABLE demo_table_1(a0 int, a1 String, a2 String) STORED AS TEXTFILE";
driver.run("drop table demo_table_1");
int retCode1 = driver.run(createTable).getResponseCode();
assertTrue(retCode1 == 0);
server.setBatchOn();
server.registerQuery("A = load '"
+ INPUT_FILE_NAME
+ "' using PigStorage(',') as (a0:int,a1:chararray,a2:chararray);");
server.registerQuery("store A into 'demo_table_1' using org.apache.hcatalog.pig.HCatStorer();");
server.executeBatch();
server.registerQuery("B = load 'demo_table_1' using org.apache.hcatalog.pig.HCatLoader();");
Iterator<Tuple> XIter = server.openIterator("B");
int numTuplesRead = 0;
while (XIter.hasNext()) {
Tuple t = XIter.next();
assertEquals(3, t.size());
assertEquals(t.get(0).toString(), "" + numTuplesRead);
assertEquals(t.get(1).toString(), "a" + numTuplesRead);
assertEquals(t.get(2).toString(), "b" + numTuplesRead);
numTuplesRead++;
}
assertEquals(input.length, numTuplesRead);
}
@Test
public void testSequenceTableWriteReadMR() throws Exception {
Initialize();
String createTable = "CREATE TABLE demo_table_2(a0 int, a1 String, a2 String) STORED AS SEQUENCEFILE";
driver.run("drop table demo_table_2");
int retCode1 = driver.run(createTable).getResponseCode();
assertTrue(retCode1 == 0);
Configuration conf = new Configuration();
conf.set(HCatConstants.HCAT_KEY_HIVE_CONF,
HCatUtil.serialize(hiveConf.getAllProperties()));
Job job = new Job(conf, "Write-hcat-seq-table");
job.setJarByClass(TestSequenceFileReadWrite.class);
job.setMapperClass(Map.class);
job.setOutputKeyClass(NullWritable.class);
job.setOutputValueClass(DefaultHCatRecord.class);
job.setInputFormatClass(TextInputFormat.class);
TextInputFormat.setInputPaths(job, INPUT_FILE_NAME);
HCatOutputFormat.setOutput(job, OutputJobInfo.create(
MetaStoreUtils.DEFAULT_DATABASE_NAME, "demo_table_2", null));
job.setOutputFormatClass(HCatOutputFormat.class);
HCatOutputFormat.setSchema(job, getSchema());
job.setNumReduceTasks(0);
assertTrue(job.waitForCompletion(true));
if (!HcatTestUtils.isHadoop23()) {
new FileOutputCommitterContainer(job, null).commitJob(job);
}
assertTrue(job.isSuccessful());
server.setBatchOn();
server.registerQuery("C = load 'default.demo_table_2' using org.apache.hcatalog.pig.HCatLoader();");
server.executeBatch();
Iterator<Tuple> XIter = server.openIterator("C");
int numTuplesRead = 0;
while (XIter.hasNext()) {
Tuple t = XIter.next();
assertEquals(3, t.size());
assertEquals(t.get(0).toString(), "" + numTuplesRead);
assertEquals(t.get(1).toString(), "a" + numTuplesRead);
assertEquals(t.get(2).toString(), "b" + numTuplesRead);
numTuplesRead++;
}
assertEquals(input.length, numTuplesRead);
}
@Test
public void testTextTableWriteReadMR() throws Exception {
Initialize();
String createTable = "CREATE TABLE demo_table_3(a0 int, a1 String, a2 String) STORED AS TEXTFILE";
driver.run("drop table demo_table_3");
int retCode1 = driver.run(createTable).getResponseCode();
assertTrue(retCode1 == 0);
Configuration conf = new Configuration();
conf.set(HCatConstants.HCAT_KEY_HIVE_CONF,
HCatUtil.serialize(hiveConf.getAllProperties()));
Job job = new Job(conf, "Write-hcat-text-table");
job.setJarByClass(TestSequenceFileReadWrite.class);
job.setMapperClass(Map.class);
job.setOutputKeyClass(NullWritable.class);
job.setOutputValueClass(DefaultHCatRecord.class);
job.setInputFormatClass(TextInputFormat.class);
job.setNumReduceTasks(0);
TextInputFormat.setInputPaths(job, INPUT_FILE_NAME);
HCatOutputFormat.setOutput(job, OutputJobInfo.create(
MetaStoreUtils.DEFAULT_DATABASE_NAME, "demo_table_3", null));
job.setOutputFormatClass(HCatOutputFormat.class);
HCatOutputFormat.setSchema(job, getSchema());
assertTrue(job.waitForCompletion(true));
if (!HcatTestUtils.isHadoop23()) {
new FileOutputCommitterContainer(job, null).commitJob(job);
}
assertTrue(job.isSuccessful());
server.setBatchOn();
server.registerQuery("D = load 'default.demo_table_3' using org.apache.hcatalog.pig.HCatLoader();");
server.executeBatch();
Iterator<Tuple> XIter = server.openIterator("D");
int numTuplesRead = 0;
while (XIter.hasNext()) {
Tuple t = XIter.next();
assertEquals(3, t.size());
assertEquals(t.get(0).toString(), "" + numTuplesRead);
assertEquals(t.get(1).toString(), "a" + numTuplesRead);
assertEquals(t.get(2).toString(), "b" + numTuplesRead);
numTuplesRead++;
}
assertEquals(input.length, numTuplesRead);
}
public static class Map extends Mapper<LongWritable, Text, NullWritable, DefaultHCatRecord> {
public void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {
String[] cols = value.toString().split(",");
DefaultHCatRecord record = new DefaultHCatRecord(3);
record.set(0, Integer.parseInt(cols[0]));
record.set(1, cols[1]);
record.set(2, cols[2]);
context.write(NullWritable.get(), record);
}
}
private HCatSchema getSchema() throws HCatException {
HCatSchema schema = new HCatSchema(new ArrayList<HCatFieldSchema>());
schema.append(new HCatFieldSchema("a0", HCatFieldSchema.Type.INT,
""));
schema.append(new HCatFieldSchema("a1",
HCatFieldSchema.Type.STRING, ""));
schema.append(new HCatFieldSchema("a2",
HCatFieldSchema.Type.STRING, ""));
return schema;
}
}