vbarua commented on PR #13772:
URL: https://github.com/apache/datafusion/pull/13772#issuecomment-2561479915

   Left some feedback about the `consume_extension_table` API.
   
   > However, there are a few things that I'd like to revisit once we have a 
(symmetrical) customisable SubstraitProducer alongside the consumer.
   
   I'm planning on working that over the holidays 
https://github.com/apache/datafusion/issues/13901, so that might come round 
faster than you think.
   
   > I want to move away from the SerializerRegistry trait and provide full 
control to the user over the serialisation of the whole ReadRel in case of 
extension tables by working with proto objects directly instead of trying to 
model this as a generic serde concern.
   
   100%
   
   > store the table name in (e.g.) ReadRel::common::hint::alias instead of 
abusing the proto::Any::type_url field of ExtensionTable::detail
   
   Honestly, if a user was doing this I would recommend that they store the 
name in the extension message directly.
   
   


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