tustvold commented on PR #5543:
URL: 
https://github.com/apache/arrow-datafusion/pull/5543#issuecomment-1463851636

   > When you have already cached the ObjectStore or register the ObjectStore 
manually, the ObjectStoreProvider will not be effective. Then there's no 
transparency.
   
   Is that not an advantage, for example, if registering a InMemory or 
LocalFileSystem, I would not want them to be automatically wrapped in a caching 
decorator?
   
   Perhaps am I missing something here, but I had understood the manual 
registration API being for advanced use-cases where you want fine-grained 
control of the `ObjectStore`, with `ObjectStoreProvider` filling the role of 
the auto-configuring store, and by extension the only thing transparently 
supported out-of-the-box. Does Ballista have some mechanism to manually 
register stores from config / SQL or something?


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