Github user twalthr commented on the issue:
https://github.com/apache/flink/pull/3426
Thanks for the update @haohui. I fixed the decimal issues by applying
changes from @wuchong's PR. I think for now we should not do the primitive
checking for scalar functions, this should be part of FLINK-5177. I will merge
this now. But we should definitely solve FLINK-5177 soon. I will assign it to
me.
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