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From haohui <...@git.apache.org>
Subject [GitHub] flink issue #3252: [FLINK-5624] Support tumbling window on streaming tables ...
Date Tue, 14 Feb 2017 21:35:06 GMT
Github user haohui commented on the issue:

    Discussed with @fhueske offline. Thanks a lot for the comments. The V4 PR implements the
    * Rebased on top of #3101 
    * `LogicalWindowAggregateRule` implements `RelOptRule` instead of the `ConvertRule`.
    * Instead of adding a new field in `LogicalWindowAggregate`, the implementation now transforms
the original `LogicalAggregate(LogicalProject())` expression to `LogicalProject(LogicalWindowAggregate(LogicalProject(...)))`.
The outermost projection ensures that the operators have the same row types before and after
the transformation.
    Please take another look.

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