/*
* CoGroup on tuples with key field selector
*/
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());
coGroupDs.writeAsCsv(resultPath);
env.execute();
// return expected result
return "1,0\n" +
"2,6\n" +
"3,24\n" +
"4,60\n" +
"5,120\n";
}
case 2: {
/*
* 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 KeySelector<CustomType, Integer>() {
private static final long serialVersionUID = 1L;
@Override
public Integer getKey(CustomType in) {
return in.myInt;
}
}).equalTo(new KeySelector<CustomType, Integer>() {
private static final long serialVersionUID = 1L;
@Override
public Integer getKey(CustomType in) {
return in.myInt;
}
}).with(new CustomTypeCoGroup());
coGroupDs.writeAsText(resultPath);
env.execute();
// return expected result
return "1,0,test\n" +
"2,6,test\n" +
"3,24,test\n" +
"4,60,test\n" +
"5,120,test\n" +
"6,210,test\n";
}
case 3: {
/*
* 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());
coGroupDs.writeAsCsv(resultPath);
env.execute();
// return expected result
return "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";
}
case 4: {
/*
* 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());
coGroupDs.writeAsCsv(resultPath);
env.execute();
// return expected result
return "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";
}
case 5: {
/*
* 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");
coGroupDs.writeAsCsv(resultPath);
env.execute();
// return expected result
return "1,0,55\n" +
"2,6,55\n" +
"3,24,55\n" +
"4,60,55\n" +
"5,120,55\n";
}
case 6: {
/*
* 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 KeySelector<CustomType, Integer>() {
private static final long serialVersionUID = 1L;
@Override
public Integer getKey(CustomType in) {
return in.myInt;
}
}).with(new MixedCoGroup());
coGroupDs.writeAsCsv(resultPath);
env.execute();
// return expected result
return "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";
}
case 7: {
/*
* 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 KeySelector<CustomType, Integer>() {
private static final long serialVersionUID = 1L;
@Override
public Integer getKey(CustomType in) {
return in.myInt;
}
}).equalTo(2).with(new MixedCoGroup2());
coGroupDs.writeAsText(resultPath);
env.execute();
// return expected result
return "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";
}
case 8: {
/*
* 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());
coGrouped.writeAsCsv(resultPath);
env.execute();
return "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";
}
case 9: {
/*
* 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 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);
}
}).
equalTo(new 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);
}
}).with(new Tuple5Tuple3CoGroup());
coGrouped.writeAsCsv(resultPath);
env.execute();
return "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";
}
case 10: {
/*
* 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());
coGroupDs.writeAsText(resultPath);
env.execute();
// return expected result
return "1,0,test\n" +
"2,6,test\n" +
"3,24,test\n" +
"4,60,test\n" +
"5,120,test\n" +
"6,210,test\n";
}
case 11: {
/*
* 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 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"));
}
}
}
});
coGroupDs.writeAsText(resultPath);
env.execute();
// return expected result
return "-1,20000,Flink\n" +
"-1,10000,Flink\n" +
"-1,30000,Flink\n";
}
case 12: {
/*
* 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 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);
}
}).equalTo(6).with(new 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"));
}
}
}
});
coGroupDs.writeAsText(resultPath);
env.execute();
// return expected result
return "-1,20000,Flink\n" +
"-1,10000,Flink\n" +
"-1,30000,Flink\n";
}
case 13: {
/*
* 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 KeySelector<POJO, Long>() {
private static final long serialVersionUID = 1L;
@Override
public Long getKey(POJO value)
throws Exception {
return value.nestedPojo.longNumber;
}
}).equalTo(6).with(new 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"));
}
}
}
});
coGroupDs.writeAsText(resultPath);
env.execute();
// return expected result
return "-1,20000,Flink\n" +
"-1,10000,Flink\n" +
"-1,30000,Flink\n";