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https://issues.apache.org/jira/browse/FLINK-2806?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14941007#comment-14941007
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ASF GitHub Bot commented on FLINK-2806:
---------------------------------------
Github user chiwanpark commented on a diff in the pull request:
https://github.com/apache/flink/pull/1212#discussion_r41009352
--- Diff:
flink-scala/src/main/scala/org/apache/flink/api/scala/codegen/TypeInformationGen.scala
---
@@ -23,6 +23,7 @@ import org.apache.flink.api.common.ExecutionConfig
import org.apache.flink.api.common.typeinfo._
import org.apache.flink.api.common.typeutils._
import org.apache.flink.api.java.typeutils._
+import org.apache.flink.api.scala.typeutils.ScalaNothingTypeInfo
import org.apache.flink.api.scala.typeutils.{CaseClassSerializer,
CaseClassTypeInfo}
--- End diff --
Maybe we can merge two import lines.
> No TypeInfo for Scala's Nothing type
> ------------------------------------
>
> Key: FLINK-2806
> URL: https://issues.apache.org/jira/browse/FLINK-2806
> Project: Flink
> Issue Type: Bug
> Components: Scala API
> Reporter: Gabor Gevay
> Assignee: Gabor Gevay
> Priority: Minor
>
> When writing some generic code, I encountered a situation where I needed a
> TypeInformation[Nothing]. Two problems prevent me from getting it:
> 1. TypeInformationGen.mkTypeInfo doesn't return a real
> TypeInformation[Nothing]. (It actually returns a casted null in that case.)
> 2. The line
> implicit def createTypeInformation[T]: TypeInformation[T] = macro
> TypeUtils.createTypeInfo[T]
> does not fire in some situations when it should, when T = Nothing. (I guess
> this is a compiler bug.)
> I will open a PR shortly.
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