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Posted to issues@flink.apache.org by StephanEwen <gi...@git.apache.org> on 2017/06/13 18:49:23 UTC

[GitHub] flink issue #4105: [FLINK-6888] [table] Can not determine TypeInformation of...

Github user StephanEwen commented on the issue:

    https://github.com/apache/flink/pull/4105
  
    Is the code ever called from Java code, or is that purely within the Scala code base?
    
    Just FYI, the design principles in the DataStream and DataSet API are:
      - Never run `TypeExtractor` for Scala code. Scala code always uses implicits and context bounds for the Type Information
      - Java code entry methods uses the Type Extractor
      - Code that is shared between Java / Scala always gets the Type Information passed in


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