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* 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.
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package org.apache.accumulo.test.mapred;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import org.apache.accumulo.core.client.BatchWriter;
import org.apache.accumulo.core.client.BatchWriterConfig;
import org.apache.accumulo.core.client.Connector;
import org.apache.accumulo.core.client.mapred.AccumuloInputFormat;
import org.apache.accumulo.core.client.mapred.AccumuloMultiTableInputFormat;
import org.apache.accumulo.core.client.mapred.RangeInputSplit;
import org.apache.accumulo.core.client.mapreduce.InputTableConfig;
import org.apache.accumulo.core.client.security.tokens.AuthenticationToken;
import org.apache.accumulo.core.data.Key;
import org.apache.accumulo.core.data.Mutation;
import org.apache.accumulo.core.data.Value;
import org.apache.accumulo.harness.AccumuloClusterHarness;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapred.JobClient;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.Mapper;
import org.apache.hadoop.mapred.OutputCollector;
import org.apache.hadoop.mapred.Reporter;
import org.apache.hadoop.mapred.lib.NullOutputFormat;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.junit.Test;
public class AccumuloMultiTableInputFormatIT extends AccumuloClusterHarness {
private static AssertionError e1 = null;
private static AssertionError e2 = null;
private static class MRTester extends Configured implements Tool {
private static class TestMapper implements Mapper<Key,Value,Key,Value> {
Key key = null;
int count = 0;
@Override
public void map(Key k, Value v, OutputCollector<Key,Value> output, Reporter reporter) throws IOException {
try {
String tableName = ((RangeInputSplit) reporter.getInputSplit()).getTableName();
if (key != null)
assertEquals(key.getRow().toString(), new String(v.get()));
assertEquals(new Text(String.format("%s_%09x", tableName, count + 1)), k.getRow());
assertEquals(String.format("%s_%09x", tableName, count), new String(v.get()));
} catch (AssertionError e) {
e1 = e;
}
key = new Key(k);
count++;
}
@Override
public void configure(JobConf job) {}
@Override
public void close() throws IOException {
try {
assertEquals(100, count);
} catch (AssertionError e) {
e2 = e;
}
}
}
@Override
public int run(String[] args) throws Exception {
if (args.length != 2) {
throw new IllegalArgumentException("Usage : " + MRTester.class.getName() + " <table1> <table2>");
}
String user = getAdminPrincipal();
AuthenticationToken pass = getAdminToken();
String table1 = args[0];
String table2 = args[1];
JobConf job = new JobConf(getConf());
job.setJarByClass(this.getClass());
job.setInputFormat(AccumuloInputFormat.class);
AccumuloMultiTableInputFormat.setConnectorInfo(job, user, pass);
AccumuloMultiTableInputFormat.setZooKeeperInstance(job, getCluster().getClientConfig());
InputTableConfig tableConfig1 = new InputTableConfig();
InputTableConfig tableConfig2 = new InputTableConfig();
Map<String,InputTableConfig> configMap = new HashMap<>();
configMap.put(table1, tableConfig1);
configMap.put(table2, tableConfig2);
AccumuloMultiTableInputFormat.setInputTableConfigs(job, configMap);
job.setMapperClass(TestMapper.class);
job.setMapOutputKeyClass(Key.class);
job.setMapOutputValueClass(Value.class);
job.setOutputFormat(NullOutputFormat.class);
job.setNumReduceTasks(0);
return JobClient.runJob(job).isSuccessful() ? 0 : 1;
}
public static void main(String[] args) throws Exception {
Configuration conf = new Configuration();
conf.set("mapreduce.framework.name", "local");
conf.set("mapreduce.cluster.local.dir", new File(System.getProperty("user.dir"), "target/mapreduce-tmp").getAbsolutePath());
assertEquals(0, ToolRunner.run(conf, new MRTester(), args));
}
}
@Test
public void testMap() throws Exception {
String[] tableNames = getUniqueNames(2);
String table1 = tableNames[0];
String table2 = tableNames[1];
Connector c = getConnector();
c.tableOperations().create(table1);
c.tableOperations().create(table2);
BatchWriter bw = c.createBatchWriter(table1, new BatchWriterConfig());
BatchWriter bw2 = c.createBatchWriter(table2, new BatchWriterConfig());
for (int i = 0; i < 100; i++) {
Mutation t1m = new Mutation(new Text(String.format("%s_%09x", table1, i + 1)));
t1m.put(new Text(), new Text(), new Value(String.format("%s_%09x", table1, i).getBytes()));
bw.addMutation(t1m);
Mutation t2m = new Mutation(new Text(String.format("%s_%09x", table2, i + 1)));
t2m.put(new Text(), new Text(), new Value(String.format("%s_%09x", table2, i).getBytes()));
bw2.addMutation(t2m);
}
bw.close();
bw2.close();
MRTester.main(new String[] {table1, table2});
assertNull(e1);
assertNull(e2);
}
}