[jira] [Created] (FLINK-2541) TypeComparator creation fails for T2, byte[]>

["Chesnay Schepler (JIRA)" <ji...@apache.org>]

Chesnay Schepler created FLINK-2541:
---------------------------------------

             Summary: TypeComparator creation fails for T2<T1<byte[]>, byte[]>
                 Key: FLINK-2541
                 URL: https://issues.apache.org/jira/browse/FLINK-2541
             Project: Flink
          Issue Type: Bug
            Reporter: Chesnay Schepler


When running the following job as a JavaProgramTest:
{code}
ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple2<Tuple1<byte[]>, byte[]>> data = env.fromElements(
	new Tuple2<Tuple1<byte[]>, byte[]>(
		new Tuple1<byte[]>(new byte[]{1, 2}), 
		new byte[]{1, 2, 3}),
	new Tuple2<Tuple1<byte[]>, byte[]>(
		new Tuple1<byte[]>(new byte[]{1, 2}), 
		new byte[]{1, 2, 3}));

data.groupBy("f0.f0")
    .reduceGroup(new DummyReduce<Tuple2<Tuple1<byte[]>, byte[]>>())
    .print();
{code}
with DummyReduce defined as
{code}
public static class DummyReduce<IN> implements GroupReduceFunction<IN, IN> {
@Override
public void reduce(Iterable<IN> values, Collector<IN> out) throws Exception {
	for (IN value : values) {
		out.collect(value);
	}}}
{code}

i encountered the following exception:

Tuple comparator creation has a bug
java.lang.IllegalArgumentException: Tuple comparator creation has a bug
	at org.apache.flink.api.java.typeutils.TupleTypeInfo.getNewComparator(TupleTypeInfo.java:131)
	at org.apache.flink.api.common.typeutils.CompositeType.createComparator(CompositeType.java:133)
	at org.apache.flink.api.common.typeutils.CompositeType.createComparator(CompositeType.java:122)
	at org.apache.flink.api.common.operators.base.GroupReduceOperatorBase.getTypeComparator(GroupReduceOperatorBase.java:155)
	at org.apache.flink.api.common.operators.base.GroupReduceOperatorBase.executeOnCollections(GroupReduceOperatorBase.java:184)
	at org.apache.flink.api.common.operators.CollectionExecutor.executeUnaryOperator(CollectionExecutor.java:236)
	at org.apache.flink.api.common.operators.CollectionExecutor.execute(CollectionExecutor.java:143)
	at org.apache.flink.api.common.operators.CollectionExecutor.executeUnaryOperator(CollectionExecutor.java:215)
	at org.apache.flink.api.common.operators.CollectionExecutor.execute(CollectionExecutor.java:143)
	at org.apache.flink.api.common.operators.CollectionExecutor.execute(CollectionExecutor.java:125)
	at org.apache.flink.api.common.operators.CollectionExecutor.executeDataSink(CollectionExecutor.java:176)
	at org.apache.flink.api.common.operators.CollectionExecutor.execute(CollectionExecutor.java:152)
	at org.apache.flink.api.common.operators.CollectionExecutor.execute(CollectionExecutor.java:125)
	at org.apache.flink.api.common.operators.CollectionExecutor.execute(CollectionExecutor.java:109)
	at org.apache.flink.api.java.CollectionEnvironment.execute(CollectionEnvironment.java:33)
	at org.apache.flink.test.util.CollectionTestEnvironment.execute(CollectionTestEnvironment.java:35)
	at org.apache.flink.test.util.CollectionTestEnvironment.execute(CollectionTestEnvironment.java:30)
	at org.apache.flink.api.java.DataSet.collect(DataSet.java:408)
	at org.apache.flink.api.java.DataSet.print(DataSet.java:1349)
	at org.apache.flink.languagebinding.api.java.python.AbstractPythonTest.testProgram(AbstractPythonTest.java:42)
	at org.apache.flink.test.util.JavaProgramTestBase.testJobCollectionExecution(JavaProgramTestBase.java:226)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:264)
	at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:153)
	at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:124)
	at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:200)
	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:153)
	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)



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