houqp commented on issue #1273:
URL: 
https://github.com/apache/arrow-datafusion/issues/1273#issuecomment-1013957063


   This is great news @realno ! Thank you for driving this. I am interested in 
getting ballista to work with delta tables managed in S3 and potentially use it 
to replace some of the spark SQL jobs we have at work as a starting point. 
However, I am also just working on datafusion and ballista in my spare time, so 
the output is limited.
   
   As for reducing development overhead, ballista currently only depends on 
public datafusion APIs, so if you have good ideas on how to restrict the api 
coupling between ballista and datafusion, then it's certainly a good thing. I 
haven't seen anymore express strong opinion on the overhead yet, so I don't 
think we are at a stage where we need to invest heavily on this. It is 
something we can keep an eye on while iterating on ballista.


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