Github user chobeat commented on the pull request:
https://github.com/apache/flink/pull/1186#issuecomment-181757426
Well that wouldn't be a problem for the export: you will create and
therefore export only models that have `double` as datatype for parameters but
that's not an issue.
This would be a problem for import though because PMML does support a wider
set of data types and model types but you can't really achieve any satisfying
degree of support for PMML in a platform like Flink and that's why everyone use
JPMML for evaluation. You will be able to only import compatible models with
compatible data fields. This would require a simple validation at runtime on
the model type and on fields' data types.
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