[jira] [Commented] (FLINK-1306) Scala API does not support standard sets

["Aljoscha Krettek (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-1306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14235744#comment-14235744 ] 

Aljoscha Krettek commented on FLINK-1306:
-----------------------------------------

Which version of Flink are you using? Also, could you maybe show the code that caused the exception? Or a minimal example?

> Scala API does not support standard sets
> ----------------------------------------
>
>                 Key: FLINK-1306
>                 URL: https://issues.apache.org/jira/browse/FLINK-1306
>             Project: Flink
>          Issue Type: Bug
>          Components: Scala API
>    Affects Versions: 0.7.0-incubating
>            Reporter: Sebastian Schelter
>
> I'm trying to use the standard scala sets in Flinks Scala API, unfortunately they don't seem to be supported...
> What can I do to be able to use sets in my UDFs?
> {noformat}
> Exception in thread "main" org.apache.flink.api.common.functions.InvalidTypesException: Interfaces and abstract classes are not valid types: interface scala.collection.immutable.Set
> 	at org.apache.flink.api.java.typeutils.TypeExtractor.privateGetForClass(TypeExtractor.java:871)
> 	at org.apache.flink.api.java.typeutils.TypeExtractor.privateGetForClass(TypeExtractor.java:863)
> 	at org.apache.flink.api.java.typeutils.TypeExtractor.createTypeInfoWithTypeHierarchy(TypeExtractor.java:406)
> 	at org.apache.flink.api.java.typeutils.TypeExtractor.privateCreateTypeInfo(TypeExtractor.java:197)
> 	at org.apache.flink.api.java.typeutils.TypeExtractor.createTypeInfo(TypeExtractor.java:184)
> 	at io.ssc.trackthetrackers.analysis.preparation.ExtractTrackingGraph$$anon$3.<init>(ExtractTrackingGraph.scala:67)
> 	at io.ssc.trackthetrackers.analysis.preparation.ExtractTrackingGraph$.fromParsedPages(ExtractTrackingGraph.scala:67)
> 	at io.ssc.trackthetrackers.analysis.preparation.ExtractTrackingGraph$delayedInit$body.apply(ExtractTrackingGraph.scala:28)
> 	at scala.Function0$class.apply$mcV$sp(Function0.scala:40)
> 	at scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:12)
> 	at scala.App$$anonfun$main$1.apply(App.scala:71)
> 	at scala.App$$anonfun$main$1.apply(App.scala:71)
> 	at scala.collection.immutable.List.foreach(List.scala:318)
> 	at scala.collection.generic.TraversableForwarder$class.foreach(TraversableForwarder.scala:32)
> 	at scala.App$class.main(App.scala:71)
> 	at io.ssc.trackthetrackers.analysis.preparation.ExtractTrackingGraph$.main(ExtractTrackingGraph.scala:26)
> 	at io.ssc.trackthetrackers.analysis.preparation.ExtractTrackingGraph.main(ExtractTrackingGraph.scala)
> 	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)
> {noformat}



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