westonpace commented on PR #13582:
URL: https://github.com/apache/datafusion/pull/13582#issuecomment-2543112725

   @alamb so I think this PR might still useful.  90% of the change here is not 
coming from the planning path but rather from the registration path.
   
   Your caching approach and PR works well for the planning path but not the 
registration path.
   
   This is not a problem for me personally.  We (Lance) have our own API for 
registration tasks and don't use DF for this.  Are there SQL-like paths for 
registration (I thought CREATE TABLE had a different trait for some reason)?  
Do you see any reason users might want to do catalog registration via DF 
instead of directly with the catalog?  If so, maybe we move forward with this 
PR.
   
   On the other hand, maybe the DF "register xyz" methods are just utility 
methods for the case where a user has not catalog and they are using DF as a 
temporary (since SessionContext isn't persisted) in-memory cache and so there 
will never be a reason to add async.
   


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