Github user beyond1920 commented on the issue:
https://github.com/apache/flink/pull/2923
@fhueske , thanks for your review. I have already modified the pr based on
your advice, including following main changes:
1. Adapt the cost model for the BatchTableSourceScan
2. Modify DataSetCalcConverter -> RexProgramProjectExtractor, and add a
test case
Thanks.
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