Felix Neutatz created FLINK-1360:
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Summary: Automatic type extraction for Void is missing
Key: FLINK-1360
URL: https://issues.apache.org/jira/browse/FLINK-1360
Project: Flink
Issue Type: Bug
Reporter: Felix Neutatz
Priority: Minor
DataSet<Tuple2<Void,Long>> data = env.fromElements(new Tuple2<Void,Long>(null,
1L));
data.print();
throws the following exception:
Exception in thread "main"
org.apache.flink.api.common.functions.InvalidTypesException: Automatic type
extraction is not possible on candidates with null values. Please specify the
types directly.
at
org.apache.flink.api.java.typeutils.TypeExtractor.privateGetForObject(TypeExtractor.java:1174)
at
org.apache.flink.api.java.typeutils.TypeExtractor.getForObject(TypeExtractor.java:1152)
at
org.apache.flink.api.java.ExecutionEnvironment.fromElements(ExecutionEnvironment.java:540)
at
org.apache.flink.hadoopcompatibility.mapreduce.example.ParquetOutput.main(ParquetOutput.java:58)
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 com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
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