[jira] [Closed] (FLINK-1360) Automatic type extraction for Void is missing

["Felix Neutatz (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-1360?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Felix Neutatz closed FLINK-1360.
--------------------------------
    Resolution: Not a Problem

Please use i.e. TypeExtractor.getForClass() in these cases

> 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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