alamb commented on PR #7727:
URL: 
https://github.com/apache/arrow-datafusion/pull/7727#issuecomment-1747589922

   
   > @alamb You can see my previous commits which removed the `input_schema` 
field. In CI, all unit tests and end-to-end tests can pass but `verify 
benchmark results` gets failures when deserializing protobuf to physical 
aggregate.
   > 
   > It is because during initializing aggregate expressions for final 
aggregate, their constructors all needs their input data type from input schema 
of partial aggregate (i.e., input schema before aggregate). That is why 
`input_schema` is there.
   
   Sorry @viirya  -- I should have looked at your comments more closely. 
   


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