snazy commented on PR #433:
URL: https://github.com/apache/polaris/pull/433#issuecomment-2497422885

   I think, we should have a design about how to handle table/view/udf metadata 
and its snapshots/versions and schemas/specs/etc and probably a vision how to 
deal with manifest list/file information.
   
   Handling these metadata objects as "opaque blobs" is quite expensive (no 
database is made to handle such huge objects).
   
   It would be nice to be have the information in a more structure way, but 
also efficiently accessible. Some use cases I can think of are:
   * For queries: just return the latest snapshot / just return one specific 
snapshot
   * Automatic metadata cleanup (remove unreferenced schema/spec/etc)
   
   With this change, we exchange the (costly) round-trip to the object store 
with another (costly) round-trip to a database.


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