/*
* 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.test.javaApiOperators;
import org.apache.flink.api.common.InvalidProgramException;
import org.apache.flink.api.common.distributions.DataDistribution;
import org.apache.flink.api.common.functions.CoGroupFunction;
import org.apache.flink.api.common.functions.RichCoGroupFunction;
import org.apache.flink.api.common.typeinfo.BasicTypeInfo;
import org.apache.flink.api.common.typeinfo.TypeInformation;
import org.apache.flink.api.java.DataSet;
import org.apache.flink.api.java.ExecutionEnvironment;
import org.apache.flink.api.java.functions.KeySelector;
import org.apache.flink.api.java.tuple.Tuple1;
import org.apache.flink.api.java.tuple.Tuple2;
import org.apache.flink.api.java.tuple.Tuple3;
import org.apache.flink.api.java.tuple.Tuple5;
import org.apache.flink.api.java.tuple.Tuple7;
import org.apache.flink.api.java.utils.DataSetUtils;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.core.memory.DataInputView;
import org.apache.flink.core.memory.DataOutputView;
import org.apache.flink.test.javaApiOperators.util.CollectionDataSets;
import org.apache.flink.test.javaApiOperators.util.CollectionDataSets.CustomType;
import org.apache.flink.test.javaApiOperators.util.CollectionDataSets.POJO;
import org.apache.flink.test.util.MultipleProgramsTestBase;
import org.apache.flink.util.Collector;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
@RunWith(Parameterized.class)
public class CoGroupITCase extends MultipleProgramsTestBase {
public CoGroupITCase(TestExecutionMode mode){
super(mode);
}
/*
* CoGroup on tuples with key field selector
*/
@Test
public void testCoGroupTuplesWithKeyFieldSelector() throws Exception {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, Integer, String, Long>> ds = CollectionDataSets.get5TupleDataSet(env);
DataSet<Tuple5<Integer, Long, Integer, String, Long>> ds2 = CollectionDataSets.get5TupleDataSet(env);
DataSet<Tuple2<Integer, Integer>> coGroupDs = ds.coGroup(ds2).where(0).equalTo(0).with(new Tuple5CoGroup());
List<Tuple2<Integer, Integer>> result = coGroupDs.collect();
String expected = "1,0\n" +
"2,6\n" +
"3,24\n" +
"4,60\n" +
"5,120\n";
compareResultAsTuples(result, expected);
}
@Test
public void testCoGroupOnTwoCustomTypeInputsWithKeyExtractors() throws Exception {
/*
* CoGroup on two custom type inputs with key extractors
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<CustomType> ds = CollectionDataSets.getCustomTypeDataSet(env);
DataSet<CustomType> ds2 = CollectionDataSets.getCustomTypeDataSet(env);
DataSet<CustomType> coGroupDs = ds.coGroup(ds2).where(new KeySelector4()).equalTo(new
KeySelector5()).with(new CustomTypeCoGroup());
List<CustomType> result = coGroupDs.collect();
String expected = "1,0,test\n" +
"2,6,test\n" +
"3,24,test\n" +
"4,60,test\n" +
"5,120,test\n" +
"6,210,test\n";
compareResultAsText(result, expected);
}
public static class KeySelector4 implements KeySelector<CustomType, Integer> {
private static final long serialVersionUID = 1L;
@Override
public Integer getKey(CustomType in) {
return in.myInt;
}
}
public static class KeySelector5 implements KeySelector<CustomType, Integer> {
private static final long serialVersionUID = 1L;
@Override
public Integer getKey(CustomType in) {
return in.myInt;
}
}
@Test
public void testCorrectnessOfCoGroupIfUDFReturnsLeftInputObjects() throws Exception {
/*
* check correctness of cogroup if UDF returns left input objects
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple3<Integer, Long, String>> ds = CollectionDataSets.get3TupleDataSet(env);
DataSet<Tuple3<Integer, Long, String>> ds2 = CollectionDataSets.get3TupleDataSet(env);
DataSet<Tuple3<Integer, Long, String>> coGroupDs = ds.coGroup(ds2).where(0).equalTo(0).with(new Tuple3ReturnLeft());
List<Tuple3<Integer, Long, String>> result = coGroupDs.collect();
String expected = "1,1,Hi\n" +
"2,2,Hello\n" +
"3,2,Hello world\n" +
"4,3,Hello world, how are you?\n" +
"5,3,I am fine.\n";
compareResultAsTuples(result, expected);
}
@Test
public void testCorrectnessOfCoGroupIfUDFReturnsRightInputObjects() throws Exception {
/*
* check correctness of cogroup if UDF returns right input objects
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, Integer, String, Long>> ds = CollectionDataSets.get5TupleDataSet(env);
DataSet<Tuple5<Integer, Long, Integer, String, Long>> ds2 = CollectionDataSets.get5TupleDataSet(env);
DataSet<Tuple5<Integer, Long, Integer, String, Long>> coGroupDs = ds.coGroup(ds2).where(0).equalTo(0).with(new Tuple5ReturnRight());
List<Tuple5<Integer, Long, Integer, String, Long>> result = coGroupDs.collect();
String expected = "1,1,0,Hallo,1\n" +
"2,2,1,Hallo Welt,2\n" +
"2,3,2,Hallo Welt wie,1\n" +
"3,4,3,Hallo Welt wie gehts?,2\n" +
"3,5,4,ABC,2\n" +
"3,6,5,BCD,3\n";
compareResultAsTuples(result, expected);
}
@Test
public void testCoGroupWithBroadcastSet() throws Exception {
/*
* Reduce with broadcast set
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Integer> intDs = CollectionDataSets.getIntegerDataSet(env);
DataSet<Tuple5<Integer, Long, Integer, String, Long>> ds = CollectionDataSets.get5TupleDataSet(env);
DataSet<Tuple5<Integer, Long, Integer, String, Long>> ds2 = CollectionDataSets.get5TupleDataSet(env);
DataSet<Tuple3<Integer, Integer, Integer>> coGroupDs = ds.coGroup(ds2).where(0).equalTo(0).with(new Tuple5CoGroupBC()).withBroadcastSet(intDs, "ints");
List<Tuple3<Integer, Integer, Integer>> result = coGroupDs.collect();
String expected = "1,0,55\n" +
"2,6,55\n" +
"3,24,55\n" +
"4,60,55\n" +
"5,120,55\n";
compareResultAsTuples(result, expected);
}
@Test
public void testCoGroupOnATupleInputWithKeyFieldSelectorAndACustomTypeInputWithKeyExtractor()
throws Exception {
/*
* CoGroup on a tuple input with key field selector and a custom type input with key extractor
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, Integer, String, Long>> ds = CollectionDataSets.get5TupleDataSet(env);
DataSet<CustomType> ds2 = CollectionDataSets.getCustomTypeDataSet(env);
DataSet<Tuple3<Integer, Long, String>> coGroupDs = ds.coGroup(ds2).where(2).equalTo(new
KeySelector2()).with(new MixedCoGroup());
List<Tuple3<Integer, Long, String>> result = coGroupDs.collect();
String expected = "0,1,test\n" +
"1,2,test\n" +
"2,5,test\n" +
"3,15,test\n" +
"4,33,test\n" +
"5,63,test\n" +
"6,109,test\n" +
"7,4,test\n" +
"8,4,test\n" +
"9,4,test\n" +
"10,5,test\n" +
"11,5,test\n" +
"12,5,test\n" +
"13,5,test\n" +
"14,5,test\n";
compareResultAsTuples(result, expected);
}
public static class KeySelector2 implements KeySelector<CustomType, Integer> {
private static final long serialVersionUID = 1L;
@Override
public Integer getKey(CustomType in) {
return in.myInt;
}
}
@Test
public void testCoGroupOnACustomTypeWithKeyExtractorAndATupleInputWithKeyFieldSelector()
throws Exception {
/*
* CoGroup on a tuple input with key field selector and a custom type input with key extractor
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, Integer, String, Long>> ds = CollectionDataSets.get5TupleDataSet(env);
DataSet<CustomType> ds2 = CollectionDataSets.getCustomTypeDataSet(env);
DataSet<CustomType> coGroupDs = ds2.coGroup(ds).where(new KeySelector3()).equalTo(2).with
(new MixedCoGroup2());
List<CustomType> result = coGroupDs.collect();
String expected = "0,1,test\n" +
"1,2,test\n" +
"2,5,test\n" +
"3,15,test\n" +
"4,33,test\n" +
"5,63,test\n" +
"6,109,test\n" +
"7,4,test\n" +
"8,4,test\n" +
"9,4,test\n" +
"10,5,test\n" +
"11,5,test\n" +
"12,5,test\n" +
"13,5,test\n" +
"14,5,test\n";
compareResultAsText(result, expected);
}
public static class KeySelector3 implements KeySelector<CustomType, Integer> {
private static final long serialVersionUID = 1L;
@Override
public Integer getKey(CustomType in) {
return in.myInt;
}
}
@Test
public void testCoGroupWithMultipleKeyFieldsWithFieldSelector() throws Exception {
/*
* CoGroup with multiple key fields
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, Integer, String, Long>> ds1 = CollectionDataSets.get5TupleDataSet(env);
DataSet<Tuple3<Integer, Long, String>> ds2 = CollectionDataSets.get3TupleDataSet(env);
DataSet<Tuple3<Integer, Long, String>> coGrouped = ds1.coGroup(ds2).
where(0, 4).equalTo(0, 1).with(new Tuple5Tuple3CoGroup());
List<Tuple3<Integer, Long, String>> result = coGrouped.collect();
String expected = "1,1,Hallo\n" +
"2,2,Hallo Welt\n" +
"3,2,Hallo Welt wie gehts?\n" +
"3,2,ABC\n" +
"5,3,HIJ\n" +
"5,3,IJK\n";
compareResultAsTuples(result, expected);
}
@Test
public void testCoGroupWithMultipleKeyFieldsWithStaticClassKeyExtractor() throws Exception {
/*
* CoGroup with multiple key fields
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, Integer, String, Long>> ds1 = CollectionDataSets.get5TupleDataSet(env);
DataSet<Tuple3<Integer, Long, String>> ds2 = CollectionDataSets.get3TupleDataSet(env);
DataSet<Tuple3<Integer, Long, String>> coGrouped = ds1.coGroup(ds2).
where(new KeySelector7()).
equalTo(new KeySelector8()).with(new Tuple5Tuple3CoGroup());
List<Tuple3<Integer, Long, String>> result = coGrouped.collect();
String expected = "1,1,Hallo\n" +
"2,2,Hallo Welt\n" +
"3,2,Hallo Welt wie gehts?\n" +
"3,2,ABC\n" +
"5,3,HIJ\n" +
"5,3,IJK\n";
compareResultAsTuples(result, expected);
}
@Test
public void testCoGroupWithMultipleKeyFieldsWithInnerClassKeyExtractorWithClosureCleaner() throws Exception {
/*
* CoGroup with multiple key fields, test working closure cleaner for inner classes
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, Integer, String, Long>> ds1 = CollectionDataSets.get5TupleDataSet(env);
DataSet<Tuple3<Integer, Long, String>> ds2 = CollectionDataSets.get3TupleDataSet(env);
DataSet<Tuple3<Integer, Long, String>> coGrouped = ds1.coGroup(ds2).
where(new KeySelector<Tuple5<Integer, Long, Integer, String, Long>,
Tuple2<Integer, Long>>() {
@Override
public Tuple2<Integer, Long> getKey(Tuple5<Integer, Long, Integer, String, Long> t) throws Exception {
return new Tuple2<Integer, Long>(t.f0, t.f4);
}
}).
equalTo(new KeySelector<Tuple3<Integer,Long,String>, Tuple2<Integer, Long>>() {
@Override
public Tuple2<Integer, Long> getKey(Tuple3<Integer,Long,String> t) {
return new Tuple2<Integer, Long>(t.f0, t.f1);
}
}).
with(new CoGroupFunction<Tuple5<Integer, Long, Integer, String, Long>, Tuple3<Integer, Long, String>, Tuple3<Integer, Long, String>>() {
@Override
public void coGroup(Iterable<Tuple5<Integer, Long, Integer, String, Long>> first,
Iterable<Tuple3<Integer, Long, String>> second,
Collector<Tuple3<Integer, Long, String>> out)
{
List<String> strs = new ArrayList<String>();
for (Tuple5<Integer, Long, Integer, String, Long> t : first) {
strs.add(t.f3);
}
for(Tuple3<Integer, Long, String> t : second) {
for(String s : strs) {
out.collect(new Tuple3<Integer, Long, String>(t.f0, t.f1, s));
}
}
}
});
List<Tuple3<Integer, Long, String>> result = coGrouped.collect();
String expected = "1,1,Hallo\n" +
"2,2,Hallo Welt\n" +
"3,2,Hallo Welt wie gehts?\n" +
"3,2,ABC\n" +
"5,3,HIJ\n" +
"5,3,IJK\n";
compareResultAsTuples(result, expected);
}
@Test
public void testCoGroupWithMultipleKeyFieldsWithInnerClassKeyExtractorWithoutClosureCleaner() throws Exception {
/*
* CoGroup with multiple key fields, test that disabling closure cleaner leads to an exception when using inner
* classes.
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
env.getConfig().disableClosureCleaner();
DataSet<Tuple5<Integer, Long, Integer, String, Long>> ds1 = CollectionDataSets.get5TupleDataSet(env);
DataSet<Tuple3<Integer, Long, String>> ds2 = CollectionDataSets.get3TupleDataSet(env);
boolean correctExceptionTriggered = false;
try {
DataSet<Tuple3<Integer, Long, String>> coGrouped = ds1.coGroup(ds2).
where(new KeySelector<Tuple5<Integer, Long, Integer, String, Long>,
Tuple2<Integer, Long>>() {
@Override
public Tuple2<Integer, Long> getKey(Tuple5<Integer, Long, Integer, String, Long> t) throws Exception {
return new Tuple2<Integer, Long>(t.f0, t.f4);
}
}).
equalTo(new KeySelector<Tuple3<Integer, Long, String>, Tuple2<Integer, Long>>() {
@Override
public Tuple2<Integer, Long> getKey(Tuple3<Integer, Long, String> t) {
return new Tuple2<Integer, Long>(t.f0, t.f1);
}
}).
with(new CoGroupFunction<Tuple5<Integer, Long, Integer, String, Long>, Tuple3<Integer, Long, String>, Tuple3<Integer, Long, String>>() {
@Override
public void coGroup(Iterable<Tuple5<Integer, Long, Integer, String, Long>> first,
Iterable<Tuple3<Integer, Long, String>> second,
Collector<Tuple3<Integer, Long, String>> out) {
List<String> strs = new ArrayList<String>();
for (Tuple5<Integer, Long, Integer, String, Long> t : first) {
strs.add(t.f3);
}
for (Tuple3<Integer, Long, String> t : second) {
for (String s : strs) {
out.collect(new Tuple3<Integer, Long, String>(t.f0, t.f1, s));
}
}
}
});
} catch (InvalidProgramException ex) {
correctExceptionTriggered = (ex.getCause() instanceof java.io.NotSerializableException);
}
Assert.assertTrue(correctExceptionTriggered);
}
public static class KeySelector7 implements KeySelector<Tuple5<Integer,Long,Integer,String,Long>,
Tuple2<Integer, Long>> {
private static final long serialVersionUID = 1L;
@Override
public Tuple2<Integer, Long> getKey(Tuple5<Integer,Long,Integer,String,Long> t) {
return new Tuple2<Integer, Long>(t.f0, t.f4);
}
}
public static class KeySelector8 implements KeySelector<Tuple3<Integer,Long,String>, Tuple2<Integer, Long>> {
private static final long serialVersionUID = 1L;
@Override
public Tuple2<Integer, Long> getKey(Tuple3<Integer,Long,String> t) {
return new Tuple2<Integer, Long>(t.f0, t.f1);
}
}
@Test
public void testCoGroupTwoCustomTypeInputsWithExpressionKeys() throws Exception {
/*
* CoGroup on two custom type inputs using expression keys
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<CustomType> ds = CollectionDataSets.getCustomTypeDataSet(env);
DataSet<CustomType> ds2 = CollectionDataSets.getCustomTypeDataSet(env);
DataSet<CustomType> coGroupDs = ds.coGroup(ds2).where("myInt").equalTo("myInt").with(new CustomTypeCoGroup());
List<CustomType> result = coGroupDs.collect();
String expected = "1,0,test\n" +
"2,6,test\n" +
"3,24,test\n" +
"4,60,test\n" +
"5,120,test\n" +
"6,210,test\n";
compareResultAsText(result, expected);
}
@Test
public void testCoGroupOnTwoCustomTypeInputsWithExpressionKeyAndFieldSelector() throws
Exception {
/*
* CoGroup on two custom type inputs using expression keys
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<POJO> ds = CollectionDataSets.getSmallPojoDataSet(env);
DataSet<Tuple7<Integer, String, Integer, Integer, Long, String, Long>> ds2 = CollectionDataSets.getSmallTuplebasedDataSet(env);
DataSet<CustomType> coGroupDs = ds.coGroup(ds2)
.where("nestedPojo.longNumber").equalTo(6).with(new CoGroup1());
List<CustomType> result = coGroupDs.collect();
String expected = "-1,20000,Flink\n" +
"-1,10000,Flink\n" +
"-1,30000,Flink\n";
compareResultAsText(result, expected);
}
public static class CoGroup1 implements CoGroupFunction<POJO, Tuple7<Integer, String, Integer, Integer, Long, String, Long>, CustomType> {
private static final long serialVersionUID = 1L;
@Override
public void coGroup(
Iterable<POJO> first,
Iterable<Tuple7<Integer, String, Integer, Integer, Long, String, Long>> second,
Collector<CustomType> out) throws Exception {
for(POJO p : first) {
for(Tuple7<Integer, String, Integer, Integer, Long, String, Long> t: second) {
Assert.assertTrue(p.nestedPojo.longNumber == t.f6);
out.collect(new CustomType(-1, p.nestedPojo.longNumber, "Flink"));
}
}
}
}
@Test
public void testCoGroupFieldSelectorAndComplicatedKeySelector() throws Exception {
/*
* CoGroup field-selector (expression keys) + key selector function
* The key selector is unnecessary complicated (Tuple1) ;)
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<POJO> ds = CollectionDataSets.getSmallPojoDataSet(env);
DataSet<Tuple7<Integer, String, Integer, Integer, Long, String, Long>> ds2 = CollectionDataSets.getSmallTuplebasedDataSet(env);
DataSet<CustomType> coGroupDs = ds.coGroup(ds2)
.where(new KeySelector6()).equalTo(6).with(new CoGroup3());
List<CustomType> result = coGroupDs.collect();
String expected = "-1,20000,Flink\n" +
"-1,10000,Flink\n" +
"-1,30000,Flink\n";
compareResultAsText(result, expected);
}
public static class KeySelector6 implements KeySelector<POJO, Tuple1<Long>> {
private static final long serialVersionUID = 1L;
@Override
public Tuple1<Long> getKey(POJO value)
throws Exception {
return new Tuple1<Long>(value.nestedPojo.longNumber);
}
}
public static class CoGroup3 implements CoGroupFunction<POJO, Tuple7<Integer,
String, Integer, Integer, Long, String, Long>, CustomType> {
private static final long serialVersionUID = 1L;
@Override
public void coGroup(
Iterable<POJO> first,
Iterable<Tuple7<Integer, String, Integer, Integer, Long, String, Long>> second,
Collector<CustomType> out) throws Exception {
for(POJO p : first) {
for(Tuple7<Integer, String, Integer, Integer, Long, String, Long> t: second) {
Assert.assertTrue(p.nestedPojo.longNumber == t.f6);
out.collect(new CustomType(-1, p.nestedPojo.longNumber, "Flink"));
}
}
}
}
@Test
public void testCoGroupFieldSelectorAndKeySelector() throws Exception {
/*
* CoGroup field-selector (expression keys) + key selector function
* The key selector is simple here
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<POJO> ds = CollectionDataSets.getSmallPojoDataSet(env);
DataSet<Tuple7<Integer, String, Integer, Integer, Long, String, Long>> ds2 = CollectionDataSets.getSmallTuplebasedDataSet(env);
DataSet<CustomType> coGroupDs = ds.coGroup(ds2)
.where(new KeySelector1()).equalTo(6).with(new CoGroup2());
List<CustomType> result = coGroupDs.collect();
String expected = "-1,20000,Flink\n" +
"-1,10000,Flink\n" +
"-1,30000,Flink\n";
compareResultAsText(result, expected);
}
@Test
public void testCoGroupWithAtomicType1() throws Exception {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple3<Integer, Long, String>> ds1 = CollectionDataSets.getSmall3TupleDataSet(env);
DataSet<Integer> ds2 = env.fromElements(0, 1, 2);
DataSet<Tuple3<Integer, Long, String>> coGroupDs = ds1.coGroup(ds2).where(0).equalTo("*").with(new CoGroupAtomic1());
List<Tuple3<Integer, Long, String>> result = coGroupDs.collect();
String expected = "(1,1,Hi)\n" +
"(2,2,Hello)";
compareResultAsText(result, expected);
}
@Test
public void testCoGroupWithAtomicType2() throws Exception {
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Integer> ds1 = env.fromElements(0, 1, 2);
DataSet<Tuple3<Integer, Long, String>> ds2 = CollectionDataSets.getSmall3TupleDataSet(env);
DataSet<Tuple3<Integer, Long, String>> coGroupDs = ds1.coGroup(ds2).where("*").equalTo(0).with(new CoGroupAtomic2());
List<Tuple3<Integer, Long, String>> result = coGroupDs.collect();
String expected = "(1,1,Hi)\n" +
"(2,2,Hello)";
compareResultAsText(result, expected);
}
@Test
public void testCoGroupWithRangePartitioning() throws Exception {
/*
* Test coGroup on tuples with multiple key field positions and same customized distribution
*/
final ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple5<Integer, Long, Integer, String, Long>> ds1 = CollectionDataSets.get5TupleDataSet(env);
DataSet<Tuple3<Integer, Long, String>> ds2 = CollectionDataSets.get3TupleDataSet(env);
env.setParallelism(4);
TestDistribution testDis = new TestDistribution();
DataSet<Tuple3<Integer, Long, String>> coGrouped =
DataSetUtils.partitionByRange(ds1, testDis, 0, 4)
.coGroup(DataSetUtils.partitionByRange(ds2, testDis, 0, 1))
.where(0, 4)
.equalTo(0, 1)
.with(new Tuple5Tuple3CoGroup());
List<Tuple3<Integer, Long, String>> result = coGrouped.collect();
String expected = "1,1,Hallo\n" +
"2,2,Hallo Welt\n" +
"3,2,Hallo Welt wie gehts?\n" +
"3,2,ABC\n" +
"5,3,HIJ\n" +
"5,3,IJK\n";
compareResultAsTuples(result, expected);
}
// --------------------------------------------------------------------------------------------
// UDF classes
// --------------------------------------------------------------------------------------------
public static class KeySelector1 implements KeySelector<POJO, Long> {
private static final long serialVersionUID = 1L;
@Override
public Long getKey(POJO value)
throws Exception {
return value.nestedPojo.longNumber;
}
}
public static class CoGroup2 implements CoGroupFunction<POJO, Tuple7<Integer, String,
Integer, Integer, Long, String, Long>, CustomType> {
private static final long serialVersionUID = 1L;
@Override
public void coGroup(
Iterable<POJO> first,
Iterable<Tuple7<Integer, String, Integer, Integer, Long, String, Long>> second,
Collector<CustomType> out) throws Exception {
for(POJO p : first) {
for(Tuple7<Integer, String, Integer, Integer, Long, String, Long> t: second) {
Assert.assertTrue(p.nestedPojo.longNumber == t.f6);
out.collect(new CustomType(-1, p.nestedPojo.longNumber, "Flink"));
}
}
}
}
public static class Tuple5CoGroup implements CoGroupFunction<Tuple5<Integer, Long, Integer, String, Long>, Tuple5<Integer, Long, Integer, String, Long>, Tuple2<Integer, Integer>> {
private static final long serialVersionUID = 1L;
@Override
public void coGroup(
Iterable<Tuple5<Integer, Long, Integer, String, Long>> first,
Iterable<Tuple5<Integer, Long, Integer, String, Long>> second,
Collector<Tuple2<Integer, Integer>> out)
{
int sum = 0;
int id = 0;
for ( Tuple5<Integer, Long, Integer, String, Long> element : first ) {
sum += element.f2;
id = element.f0;
}
for ( Tuple5<Integer, Long, Integer, String, Long> element : second ) {
sum += element.f2;
id = element.f0;
}
out.collect(new Tuple2<Integer, Integer>(id, sum));
}
}
public static class CustomTypeCoGroup implements CoGroupFunction<CustomType, CustomType, CustomType> {
private static final long serialVersionUID = 1L;
@Override
public void coGroup(Iterable<CustomType> first, Iterable<CustomType> second, Collector<CustomType> out) {
CustomType o = new CustomType(0,0,"test");
for ( CustomType element : first ) {
o.myInt = element.myInt;
o.myLong += element.myLong;
}
for ( CustomType element : second ) {
o.myInt = element.myInt;
o.myLong += element.myLong;
}
out.collect(o);
}
}
public static class MixedCoGroup implements CoGroupFunction<Tuple5<Integer, Long, Integer, String, Long>, CustomType, Tuple3<Integer, Long, String>> {
private static final long serialVersionUID = 1L;
@Override
public void coGroup(
Iterable<Tuple5<Integer, Long, Integer, String, Long>> first,
Iterable<CustomType> second,
Collector<Tuple3<Integer, Long, String>> out) throws Exception {
long sum = 0;
int id = 0;
for ( Tuple5<Integer, Long, Integer, String, Long> element : first ) {
sum += element.f0;
id = element.f2;
}
for (CustomType element : second) {
id = element.myInt;
sum += element.myLong;
}
out.collect(new Tuple3<Integer, Long, String>(id, sum, "test"));
}
}
public static class MixedCoGroup2 implements CoGroupFunction<CustomType, Tuple5<Integer, Long, Integer, String, Long>, CustomType> {
private static final long serialVersionUID = 1L;
@Override
public void coGroup(Iterable<CustomType> first,
Iterable<Tuple5<Integer, Long, Integer, String, Long>> second,
Collector<CustomType> out)
{
CustomType o = new CustomType(0,0,"test");
for (CustomType element : first) {
o.myInt = element.myInt;
o.myLong += element.myLong;
}
for (Tuple5<Integer, Long, Integer, String, Long> element : second) {
o.myInt = element.f2;
o.myLong += element.f0;
}
out.collect(o);
}
}
public static class Tuple3ReturnLeft implements CoGroupFunction<Tuple3<Integer, Long, String>, Tuple3<Integer, Long, String>, Tuple3<Integer, Long, String>> {
private static final long serialVersionUID = 1L;
@Override
public void coGroup(Iterable<Tuple3<Integer, Long, String>> first,
Iterable<Tuple3<Integer, Long, String>> second,
Collector<Tuple3<Integer, Long, String>> out)
{
for (Tuple3<Integer, Long, String> element : first) {
if(element.f0 < 6) {
out.collect(element);
}
}
}
}
public static class Tuple5ReturnRight implements CoGroupFunction<Tuple5<Integer, Long, Integer, String, Long>, Tuple5<Integer, Long, Integer, String, Long>, Tuple5<Integer, Long, Integer, String, Long>> {
private static final long serialVersionUID = 1L;
@Override
public void coGroup(
Iterable<Tuple5<Integer, Long, Integer, String, Long>> first,
Iterable<Tuple5<Integer, Long, Integer, String, Long>> second,
Collector<Tuple5<Integer, Long, Integer, String, Long>> out)
{
for (Tuple5<Integer, Long, Integer, String, Long> element : second) {
if(element.f0 < 4) {
out.collect(element);
}
}
}
}
public static class Tuple5CoGroupBC extends RichCoGroupFunction<Tuple5<Integer, Long, Integer, String, Long>, Tuple5<Integer, Long, Integer, String, Long>, Tuple3<Integer, Integer, Integer>> {
private static final long serialVersionUID = 1L;
private int broadcast = 42;
@Override
public void open(Configuration config) {
Collection<Integer> ints = this.getRuntimeContext().getBroadcastVariable("ints");
int sum = 0;
for(Integer i : ints) {
sum += i;
}
broadcast = sum;
}
@Override
public void coGroup(
Iterable<Tuple5<Integer, Long, Integer, String, Long>> first,
Iterable<Tuple5<Integer, Long, Integer, String, Long>> second,
Collector<Tuple3<Integer, Integer, Integer>> out)
{
int sum = 0;
int id = 0;
for (Tuple5<Integer, Long, Integer, String, Long> element : first) {
sum += element.f2;
id = element.f0;
}
for (Tuple5<Integer, Long, Integer, String, Long> element : second) {
sum += element.f2;
id = element.f0;
}
out.collect(new Tuple3<Integer, Integer, Integer>(id, sum, broadcast));
}
}
public static class Tuple5Tuple3CoGroup implements CoGroupFunction<Tuple5<Integer, Long, Integer, String, Long>, Tuple3<Integer, Long, String>, Tuple3<Integer, Long, String>> {
private static final long serialVersionUID = 1L;
@Override
public void coGroup(Iterable<Tuple5<Integer, Long, Integer, String, Long>> first,
Iterable<Tuple3<Integer, Long, String>> second,
Collector<Tuple3<Integer, Long, String>> out)
{
List<String> strs = new ArrayList<String>();
for (Tuple5<Integer, Long, Integer, String, Long> t : first) {
strs.add(t.f3);
}
for(Tuple3<Integer, Long, String> t : second) {
for(String s : strs) {
out.collect(new Tuple3<Integer, Long, String>(t.f0, t.f1, s));
}
}
}
}
public static class CoGroupAtomic1 implements CoGroupFunction<Tuple3<Integer, Long, String>, Integer, Tuple3<Integer, Long, String>> {
private static final long serialVersionUID = 1L;
@Override
public void coGroup(Iterable<Tuple3<Integer, Long, String>> first, Iterable<Integer> second, Collector<Tuple3<Integer, Long, String>> out) throws Exception {
List<Integer> ints = new ArrayList<Integer>();
for (Integer i : second) {
ints.add(i);
}
for (Tuple3<Integer, Long, String> t : first) {
for (Integer i : ints) {
if (t.f0.equals(i)) {
out.collect(t);
}
}
}
}
}
public static class CoGroupAtomic2 implements CoGroupFunction<Integer, Tuple3<Integer, Long, String>, Tuple3<Integer, Long, String>> {
private static final long serialVersionUID = 1L;
@Override
public void coGroup(Iterable<Integer> first, Iterable<Tuple3<Integer, Long, String>> second, Collector<Tuple3<Integer, Long, String>> out) throws Exception {
List<Integer> ints = new ArrayList<Integer>();
for (Integer i : first) {
ints.add(i);
}
for (Tuple3<Integer, Long, String> t : second) {
for (Integer i : ints) {
if (t.f0.equals(i)) {
out.collect(t);
}
}
}
}
}
public static class TestDistribution implements DataDistribution {
public Object[][] boundaries = new Object[][]{
new Object[]{2, 2L},
new Object[]{5, 4L},
new Object[]{10, 12L},
new Object[]{21, 6L}
};
public TestDistribution() {}
@Override
public Object[] getBucketBoundary(int bucketNum, int totalNumBuckets) {
return boundaries[bucketNum];
}
@Override
public int getNumberOfFields() {
return 2;
}
@Override
public TypeInformation[] getKeyTypes() {
return new TypeInformation[]{BasicTypeInfo.INT_TYPE_INFO, BasicTypeInfo.LONG_TYPE_INFO};
}
@Override
public void write(DataOutputView out) throws IOException {
}
@Override
public void read(DataInputView in) throws IOException {
}
@Override
public boolean equals(Object obj) {
return obj instanceof TestDistribution;
}
}
}