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From fhueske <...@git.apache.org>
Subject [GitHub] flink pull request: [FLINK-3754][Table]Add a validation phase befo...
Date Thu, 28 Apr 2016 12:56:12 GMT
Github user fhueske commented on the pull request:

    https://github.com/apache/flink/pull/1916#issuecomment-215414605
  
    If we decide for eager validation, we can also simplify the code a bit, right? 
    
    I might be wrong but we could remove `PlanPreparation` and the recursive validation of
`LogicalNode` since the inputs of an operator would have been already validated. The checks
of `Validator.validate()` could be moved to the respective `LogicalNode`. Not sure if we would
still need the `RuleExecutor`.


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