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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.
*/
package org.apache.flink.optimizer.custompartition;
import static org.junit.Assert.*;
import org.apache.flink.api.common.InvalidProgramException;
import org.apache.flink.api.common.Plan;
import org.apache.flink.api.common.functions.Partitioner;
import org.apache.flink.api.common.operators.Order;
import org.apache.flink.api.java.DataSet;
import org.apache.flink.api.java.ExecutionEnvironment;
import org.apache.flink.api.java.io.DiscardingOutputFormat;
import org.apache.flink.optimizer.plan.OptimizedPlan;
import org.apache.flink.optimizer.plan.SingleInputPlanNode;
import org.apache.flink.optimizer.plan.SinkPlanNode;
import org.apache.flink.optimizer.testfunctions.DummyReducer;
import org.apache.flink.optimizer.testfunctions.IdentityGroupReducerCombinable;
import org.apache.flink.optimizer.util.CompilerTestBase;
import org.apache.flink.runtime.operators.shipping.ShipStrategyType;
import org.junit.Test;
@SuppressWarnings("serial")
public class GroupingPojoTranslationTest extends CompilerTestBase {
@Test
public void testCustomPartitioningTupleReduce() {
try {
ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Pojo2> data = env.fromElements(new Pojo2())
.rebalance().setParallelism(4);
data.groupBy("a").withPartitioner(new TestPartitionerInt())
.reduce(new DummyReducer<Pojo2>())
.output(new DiscardingOutputFormat<Pojo2>());
Plan p = env.createProgramPlan();
OptimizedPlan op = compileNoStats(p);
SinkPlanNode sink = op.getDataSinks().iterator().next();
SingleInputPlanNode reducer = (SingleInputPlanNode) sink.getInput().getSource();
SingleInputPlanNode combiner = (SingleInputPlanNode) reducer.getInput().getSource();
assertEquals(ShipStrategyType.FORWARD, sink.getInput().getShipStrategy());
assertEquals(ShipStrategyType.PARTITION_CUSTOM, reducer.getInput().getShipStrategy());
assertEquals(ShipStrategyType.FORWARD, combiner.getInput().getShipStrategy());
}
catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
@Test
public void testCustomPartitioningTupleGroupReduce() {
try {
ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Pojo2> data = env.fromElements(new Pojo2())
.rebalance().setParallelism(4);
data.groupBy("a").withPartitioner(new TestPartitionerInt())
.reduceGroup(new IdentityGroupReducerCombinable<Pojo2>())
.output(new DiscardingOutputFormat<Pojo2>());
Plan p = env.createProgramPlan();
OptimizedPlan op = compileNoStats(p);
SinkPlanNode sink = op.getDataSinks().iterator().next();
SingleInputPlanNode reducer = (SingleInputPlanNode) sink.getInput().getSource();
SingleInputPlanNode combiner = (SingleInputPlanNode) reducer.getInput().getSource();
assertEquals(ShipStrategyType.FORWARD, sink.getInput().getShipStrategy());
assertEquals(ShipStrategyType.PARTITION_CUSTOM, reducer.getInput().getShipStrategy());
assertEquals(ShipStrategyType.FORWARD, combiner.getInput().getShipStrategy());
}
catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
@Test
public void testCustomPartitioningTupleGroupReduceSorted() {
try {
ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Pojo3> data = env.fromElements(new Pojo3())
.rebalance().setParallelism(4);
data.groupBy("a").withPartitioner(new TestPartitionerInt())
.sortGroup("b", Order.ASCENDING)
.reduceGroup(new IdentityGroupReducerCombinable<Pojo3>())
.output(new DiscardingOutputFormat<Pojo3>());
Plan p = env.createProgramPlan();
OptimizedPlan op = compileNoStats(p);
SinkPlanNode sink = op.getDataSinks().iterator().next();
SingleInputPlanNode reducer = (SingleInputPlanNode) sink.getInput().getSource();
SingleInputPlanNode combiner = (SingleInputPlanNode) reducer.getInput().getSource();
assertEquals(ShipStrategyType.FORWARD, sink.getInput().getShipStrategy());
assertEquals(ShipStrategyType.PARTITION_CUSTOM, reducer.getInput().getShipStrategy());
assertEquals(ShipStrategyType.FORWARD, combiner.getInput().getShipStrategy());
}
catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
@Test
public void testCustomPartitioningTupleGroupReduceSorted2() {
try {
ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Pojo4> data = env.fromElements(new Pojo4())
.rebalance().setParallelism(4);
data.groupBy("a").withPartitioner(new TestPartitionerInt())
.sortGroup("b", Order.ASCENDING)
.sortGroup("c", Order.DESCENDING)
.reduceGroup(new IdentityGroupReducerCombinable<Pojo4>())
.output(new DiscardingOutputFormat<Pojo4>());
Plan p = env.createProgramPlan();
OptimizedPlan op = compileNoStats(p);
SinkPlanNode sink = op.getDataSinks().iterator().next();
SingleInputPlanNode reducer = (SingleInputPlanNode) sink.getInput().getSource();
SingleInputPlanNode combiner = (SingleInputPlanNode) reducer.getInput().getSource();
assertEquals(ShipStrategyType.FORWARD, sink.getInput().getShipStrategy());
assertEquals(ShipStrategyType.PARTITION_CUSTOM, reducer.getInput().getShipStrategy());
assertEquals(ShipStrategyType.FORWARD, combiner.getInput().getShipStrategy());
}
catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
@Test
public void testCustomPartitioningTupleInvalidType() {
try {
ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Pojo2> data = env.fromElements(new Pojo2())
.rebalance().setParallelism(4);
try {
data.groupBy("a").withPartitioner(new TestPartitionerLong());
fail("Should throw an exception");
}
catch (InvalidProgramException e) {}
}
catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
@Test
public void testCustomPartitioningTupleInvalidTypeSorted() {
try {
ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Pojo3> data = env.fromElements(new Pojo3())
.rebalance().setParallelism(4);
try {
data.groupBy("a")
.sortGroup("b", Order.ASCENDING)
.withPartitioner(new TestPartitionerLong());
fail("Should throw an exception");
}
catch (InvalidProgramException e) {}
}
catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
@Test
public void testCustomPartitioningTupleRejectCompositeKey() {
try {
ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Pojo2> data = env.fromElements(new Pojo2())
.rebalance().setParallelism(4);
try {
data.groupBy("a", "b")
.withPartitioner(new TestPartitionerInt());
fail("Should throw an exception");
}
catch (InvalidProgramException e) {}
}
catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
// --------------------------------------------------------------------------------------------
public static class Pojo2 {
public int a;
public int b;
}
public static class Pojo3 {
public int a;
public int b;
public int c;
}
public static class Pojo4 {
public int a;
public int b;
public int c;
public int d;
}
private static class TestPartitionerInt implements Partitioner<Integer> {
@Override
public int partition(Integer key, int numPartitions) {
return 0;
}
}
private static class TestPartitionerLong implements Partitioner<Long> {
@Override
public int partition(Long key, int numPartitions) {
return 0;
}
}
}