/**
* 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 junit.framework.Assert;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hive.serde2.thrift.test.IntString;
import org.apache.hadoop.io.BytesWritable;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.SequenceFile;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
import org.apache.hcatalog.common.HCatConstants;
import org.apache.hcatalog.data.HCatRecord;
import org.apache.thrift.protocol.TBinaryProtocol;
import org.apache.thrift.transport.TIOStreamTransport;
import org.junit.Before;
import org.junit.Test;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
public class TestHCatInputFormat extends HCatBaseTest {
private boolean setUpComplete = false;
/**
* Create an input sequence file with 100 records; every 10th record is bad.
* Load this table into Hive.
*/
@Before
@Override
public void setUp() throws Exception {
super.setUp();
if (setUpComplete) {
return;
}
Path intStringSeq = new Path(TEST_DATA_DIR + "/data/intString.seq");
LOG.info("Creating data file: " + intStringSeq);
SequenceFile.Writer seqFileWriter = SequenceFile.createWriter(
intStringSeq.getFileSystem(hiveConf), hiveConf, intStringSeq,
NullWritable.class, BytesWritable.class);
ByteArrayOutputStream out = new ByteArrayOutputStream();
TIOStreamTransport transport = new TIOStreamTransport(out);
TBinaryProtocol protocol = new TBinaryProtocol(transport);
for (int i = 1; i <= 100; i++) {
if (i % 10 == 0) {
seqFileWriter.append(NullWritable.get(), new BytesWritable("bad record".getBytes()));
} else {
out.reset();
IntString intString = new IntString(i, Integer.toString(i), i);
intString.write(protocol);
BytesWritable bytesWritable = new BytesWritable(out.toByteArray());
seqFileWriter.append(NullWritable.get(), bytesWritable);
}
}
seqFileWriter.close();
// Now let's load this file into a new Hive table.
Assert.assertEquals(0, driver.run("drop table if exists test_bad_records").getResponseCode());
Assert.assertEquals(0, driver.run(
"create table test_bad_records " +
"row format serde 'org.apache.hadoop.hive.serde2.thrift.ThriftDeserializer' " +
"with serdeproperties ( " +
" 'serialization.class'='org.apache.hadoop.hive.serde2.thrift.test.IntString', " +
" 'serialization.format'='org.apache.thrift.protocol.TBinaryProtocol') " +
"stored as" +
" inputformat 'org.apache.hadoop.mapred.SequenceFileInputFormat'" +
" outputformat 'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'")
.getResponseCode());
Assert.assertEquals(0, driver.run("load data local inpath '" + intStringSeq.getParent() +
"' into table test_bad_records").getResponseCode());
setUpComplete = true;
}
@Test
public void testBadRecordHandlingPasses() throws Exception {
Assert.assertTrue(runJob(0.1f));
}
@Test
public void testBadRecordHandlingFails() throws Exception {
Assert.assertFalse(runJob(0.01f));
}
private boolean runJob(float badRecordThreshold) throws Exception {
Configuration conf = new Configuration();
conf.setFloat(HCatConstants.HCAT_INPUT_BAD_RECORD_THRESHOLD_KEY, badRecordThreshold);
Job job = new Job(conf);
job.setJarByClass(this.getClass());
job.setMapperClass(MyMapper.class);
job.setInputFormatClass(HCatInputFormat.class);
job.setOutputFormatClass(TextOutputFormat.class);
HCatInputFormat.setInput(job, "default", "test_bad_records");
job.setMapOutputKeyClass(HCatRecord.class);
job.setMapOutputValueClass(HCatRecord.class);
job.setNumReduceTasks(0);
Path path = new Path(TEST_DATA_DIR, "test_bad_record_handling_output");
if (path.getFileSystem(conf).exists(path)) {
path.getFileSystem(conf).delete(path, true);
}
TextOutputFormat.setOutputPath(job, path);
return job.waitForCompletion(true);
}
public static class MyMapper extends Mapper<NullWritable, HCatRecord, NullWritable, Text> {
@Override
public void map(NullWritable key, HCatRecord value, Context context)
throws IOException, InterruptedException {
LOG.info("HCatRecord: " + value);
context.write(NullWritable.get(), new Text(value.toString()));
}
}
}