/***********************************************************************************************************************
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* Licensed 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 eu.stratosphere.test.operators;
import eu.stratosphere.api.common.Plan;
import eu.stratosphere.api.java.record.operators.FileDataSink;
import eu.stratosphere.api.java.record.operators.FileDataSource;
import eu.stratosphere.api.java.record.functions.JoinFunction;
import eu.stratosphere.api.java.record.io.DelimitedInputFormat;
import eu.stratosphere.api.java.record.operators.JoinOperator;
import eu.stratosphere.compiler.PactCompiler;
import eu.stratosphere.configuration.Configuration;
import eu.stratosphere.test.operators.io.ContractITCaseIOFormats.ContractITCaseInputFormat;
import eu.stratosphere.test.operators.io.ContractITCaseIOFormats.ContractITCaseOutputFormat;
import eu.stratosphere.test.util.RecordAPITestBase;
import eu.stratosphere.types.IntValue;
import eu.stratosphere.types.Record;
import eu.stratosphere.types.StringValue;
import eu.stratosphere.util.Collector;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.Serializable;
import java.util.Collection;
import java.util.LinkedList;
@RunWith(Parameterized.class)
public class JoinITCase extends RecordAPITestBase {
private static final Log LOG = LogFactory.getLog(JoinITCase.class);
String leftInPath = null;
String rightInPath = null;
String resultPath = null;
public JoinITCase(Configuration testConfig) {
super(testConfig);
}
private static final String LEFT_IN = "1 1\n2 2\n3 3\n4 4\n1 2\n2 3\n3 4\n4 5\n" +
"1 3\n2 4\n3 5\n4 6\n1 4\n2 5\n3 6\n4 7\n";
private static final String RIGHT_IN = "1 1\n2 2\n3 3\n5 1\n1 1\n2 2\n3 3\n6 1\n" +
"1 1\n2 2\n2 2\n7 1\n1 1\n2 2\n2 2\n8 1\n";
private static final String RESULT = "2 1\n2 1\n2 1\n2 1\n2 2\n2 2\n2 2\n2 2\n2 3\n2 3\n2 3\n2 3\n2 4\n2 4\n2 4\n2 4\n"
+ "4 1\n4 1\n4 2\n4 2\n4 3\n4 3\n4 4\n4 4\n"
+ "3 1\n3 2\n3 3\n3 4\n3 1\n3 2\n3 3\n3 4\n3 1\n3 2\n3 3\n3 4\n3 1\n3 2\n3 3\n3 4\n3 1\n3 2\n3 3\n3 4\n3 1\n3 2\n3 3\n3 4\n";
@Override
protected void preSubmit() throws Exception {
leftInPath = createTempFile("left_in.txt", LEFT_IN);
rightInPath = createTempFile("right_in.txt", RIGHT_IN);
resultPath = getTempDirPath("result");
}
public static class TestMatcher extends JoinFunction implements Serializable {
private static final long serialVersionUID = 1L;
private StringValue keyString = new StringValue();
private StringValue valueString = new StringValue();
@Override
public void join(Record value1, Record value2, Collector<Record> out)
throws Exception {
keyString = value1.getField(0, keyString);
keyString.setValue(""+ (Integer.parseInt(keyString.getValue())+1));
value1.setField(0, keyString);
valueString = value1.getField(1, valueString);
int val1 = Integer.parseInt(valueString.getValue())+2;
valueString = value2.getField(1, valueString);
int val2 = Integer.parseInt(valueString.getValue())+1;
value1.setField(1, new IntValue(val1 - val2));
out.collect(value1);
if (LOG.isDebugEnabled())
LOG.debug("Processed: [" + keyString.toString() + "," + val1 + "] + " +
"[" + keyString.toString() + "," + val2 + "]");
}
}
@Override
protected Plan getTestJob() {
FileDataSource input_left = new FileDataSource(
new ContractITCaseInputFormat(), leftInPath);
DelimitedInputFormat.configureDelimitedFormat(input_left)
.recordDelimiter('\n');
input_left.setDegreeOfParallelism(config.getInteger("MatchTest#NoSubtasks", 1));
FileDataSource input_right = new FileDataSource(
new ContractITCaseInputFormat(), rightInPath);
DelimitedInputFormat.configureDelimitedFormat(input_right)
.recordDelimiter('\n');
input_right.setDegreeOfParallelism(config.getInteger("MatchTest#NoSubtasks", 1));
JoinOperator testMatcher = JoinOperator.builder(new TestMatcher(), StringValue.class, 0, 0)
.build();
testMatcher.setDegreeOfParallelism(config.getInteger("MatchTest#NoSubtasks", 1));
testMatcher.getParameters().setString(PactCompiler.HINT_LOCAL_STRATEGY,
config.getString("MatchTest#LocalStrategy", ""));
if (config.getString("MatchTest#ShipStrategy", "").equals("BROADCAST_FIRST")) {
testMatcher.getParameters().setString(PactCompiler.HINT_SHIP_STRATEGY_FIRST_INPUT,
PactCompiler.HINT_SHIP_STRATEGY_BROADCAST);
testMatcher.getParameters().setString(PactCompiler.HINT_SHIP_STRATEGY_SECOND_INPUT,
PactCompiler.HINT_SHIP_STRATEGY_FORWARD);
} else if (config.getString("MatchTest#ShipStrategy", "").equals("BROADCAST_SECOND")) {
testMatcher.getParameters().setString(PactCompiler.HINT_SHIP_STRATEGY_FIRST_INPUT,
PactCompiler.HINT_SHIP_STRATEGY_FORWARD);
testMatcher.getParameters().setString(PactCompiler.HINT_SHIP_STRATEGY_SECOND_INPUT,
PactCompiler.HINT_SHIP_STRATEGY_BROADCAST);
} else {
testMatcher.getParameters().setString(PactCompiler.HINT_SHIP_STRATEGY,
config.getString("MatchTest#ShipStrategy", ""));
}
FileDataSink output = new FileDataSink(
new ContractITCaseOutputFormat(), resultPath);
output.setDegreeOfParallelism(1);
output.setInput(testMatcher);
testMatcher.setFirstInput(input_left);
testMatcher.setSecondInput(input_right);
return new Plan(output);
}
@Override
protected void postSubmit() throws Exception {
compareResultsByLinesInMemory(RESULT, resultPath);
}
@Parameters
public static Collection<Object[]> getConfigurations() throws FileNotFoundException, IOException {
LinkedList<Configuration> tConfigs = new LinkedList<Configuration>();
String[] localStrategies = { PactCompiler.HINT_LOCAL_STRATEGY_SORT_BOTH_MERGE,
PactCompiler.HINT_LOCAL_STRATEGY_HASH_BUILD_FIRST, PactCompiler.HINT_LOCAL_STRATEGY_HASH_BUILD_SECOND };
String[] shipStrategies = { PactCompiler.HINT_SHIP_STRATEGY_REPARTITION_HASH, "BROADCAST_FIRST", "BROADCAST_SECOND"};
for (String localStrategy : localStrategies) {
for (String shipStrategy : shipStrategies) {
Configuration config = new Configuration();
config.setString("MatchTest#LocalStrategy", localStrategy);
config.setString("MatchTest#ShipStrategy", shipStrategy);
config.setInteger("MatchTest#NoSubtasks", 4);
tConfigs.add(config);
}
}
return toParameterList(tConfigs);
}
}