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* Licensed to the Apache Software Foundation (ASF) under one
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* 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.flink.runtime.operators;
import org.junit.Assert;
import org.apache.flink.api.common.functions.FlatJoinFunction;
import org.apache.flink.api.common.typeutils.record.RecordComparator;
import org.apache.flink.api.common.typeutils.record.RecordPairComparatorFactory;
import org.apache.flink.api.java.record.functions.JoinFunction;
import org.apache.flink.runtime.operators.testutils.DriverTestBase;
import org.apache.flink.runtime.operators.testutils.UniformRecordGenerator;
import org.apache.flink.types.IntValue;
import org.apache.flink.types.Key;
import org.apache.flink.types.Record;
import org.apache.flink.util.Collector;
import org.junit.Test;
public class MatchTaskExternalITCase extends DriverTestBase<FlatJoinFunction<Record, Record, Record>>
{
private static final long HASH_MEM = 4*1024*1024;
private static final long SORT_MEM = 3*1024*1024;
private static final long BNLJN_MEM = 10 * PAGE_SIZE;
private final double bnljn_frac;
private final double hash_frac;
@SuppressWarnings("unchecked")
private final RecordComparator comparator1 = new RecordComparator(
new int[]{0}, (Class<? extends Key<?>>[])new Class[]{ IntValue.class });
@SuppressWarnings("unchecked")
private final RecordComparator comparator2 = new RecordComparator(
new int[]{0}, (Class<? extends Key<?>>[])new Class[]{ IntValue.class });
private final CountingOutputCollector output = new CountingOutputCollector();
public MatchTaskExternalITCase() {
super(HASH_MEM, 2, SORT_MEM);
bnljn_frac = (double)BNLJN_MEM/this.getMemoryManager().getMemorySize();
hash_frac = (double)HASH_MEM/this.getMemoryManager().getMemorySize();
}
@Test
public void testExternalSort1MatchTask() {
final int keyCnt1 = 16384*4;
final int valCnt1 = 2;
final int keyCnt2 = 8192;
final int valCnt2 = 4*2;
final int expCnt = valCnt1*valCnt2*Math.min(keyCnt1, keyCnt2);
setOutput(this.output);
addDriverComparator(this.comparator1);
addDriverComparator(this.comparator2);
getTaskConfig().setDriverPairComparator(RecordPairComparatorFactory.get());
getTaskConfig().setDriverStrategy(DriverStrategy.MERGE);
getTaskConfig().setRelativeMemoryDriver(bnljn_frac);
setNumFileHandlesForSort(4);
final MatchDriver<Record, Record, Record> testTask = new MatchDriver<Record, Record, Record>();
try {
addInputSorted(new UniformRecordGenerator(keyCnt1, valCnt1, false), this.comparator1.duplicate());
addInputSorted(new UniformRecordGenerator(keyCnt2, valCnt2, false), this.comparator2.duplicate());
testDriver(testTask, MockMatchStub.class);
} catch (Exception e) {
e.printStackTrace();
Assert.fail("The test caused an exception.");
}
Assert.assertEquals("Wrong result set size.", expCnt, this.output.getNumberOfRecords());
}
@Test
public void testExternalHash1MatchTask() {
final int keyCnt1 = 32768;
final int valCnt1 = 8;
final int keyCnt2 = 65536;
final int valCnt2 = 8;
final int expCnt = valCnt1*valCnt2*Math.min(keyCnt1, keyCnt2);
addInput(new UniformRecordGenerator(keyCnt1, valCnt1, false));
addInput(new UniformRecordGenerator(keyCnt2, valCnt2, false));
addDriverComparator(this.comparator1);
addDriverComparator(this.comparator2);
getTaskConfig().setDriverPairComparator(RecordPairComparatorFactory.get());
setOutput(this.output);
getTaskConfig().setDriverStrategy(DriverStrategy.HYBRIDHASH_BUILD_FIRST);
getTaskConfig().setRelativeMemoryDriver(hash_frac);
MatchDriver<Record, Record, Record> testTask = new MatchDriver<Record, Record, Record>();
try {
testDriver(testTask, MockMatchStub.class);
} catch (Exception e) {
e.printStackTrace();
Assert.fail("Test caused an exception.");
}
Assert.assertEquals("Wrong result set size.", expCnt, this.output.getNumberOfRecords());
}
@Test
public void testExternalHash2MatchTask() {
final int keyCnt1 = 32768;
final int valCnt1 = 8;
final int keyCnt2 = 65536;
final int valCnt2 = 8;
final int expCnt = valCnt1*valCnt2*Math.min(keyCnt1, keyCnt2);
addInput(new UniformRecordGenerator(keyCnt1, valCnt1, false));
addInput(new UniformRecordGenerator(keyCnt2, valCnt2, false));
addDriverComparator(this.comparator1);
addDriverComparator(this.comparator2);
getTaskConfig().setDriverPairComparator(RecordPairComparatorFactory.get());
setOutput(this.output);
getTaskConfig().setDriverStrategy(DriverStrategy.HYBRIDHASH_BUILD_SECOND);
getTaskConfig().setRelativeMemoryDriver(hash_frac);
MatchDriver<Record, Record, Record> testTask = new MatchDriver<Record, Record, Record>();
try {
testDriver(testTask, MockMatchStub.class);
} catch (Exception e) {
e.printStackTrace();
Assert.fail("Test caused an exception.");
}
Assert.assertEquals("Wrong result set size.", expCnt, this.output.getNumberOfRecords());
}
public static final class MockMatchStub extends JoinFunction {
private static final long serialVersionUID = 1L;
@Override
public void join(Record value1, Record value2, Collector<Record> out) throws Exception {
out.collect(value1);
}
}
}