wiedld commented on issue #13652:
URL: https://github.com/apache/datafusion/issues/13652#issuecomment-2563932418

   My impression was that the plan construction occurred with the LP (as we 
do), and not by constructing their own de novo physical plan. Is this correct?
   
   If so, then I think the [above list of 
invariants](https://github.com/apache/datafusion/issues/13652#issuecomment-2563115493)
 to check would most likely occur at the LP-level (not the physical plan). I 
can definitely put up a PR for those. Thank you!
   
   Whereas for the physical plan invariants, (not LP), do we want any invariant 
checking there? Because I looked at the apache docs & physical plan APIs and 
from (my naive) understanding [these are the only two 
invariants](https://github.com/apache/datafusion/issues/13652#issuecomment-2563033771)
 to check after physical plan mutations (a.k.a. PhysicalOptimizerRule applied). 
Is this correct? 🤔 


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