yahoNanJing commented on issue #1916:
URL: 
https://github.com/apache/arrow-datafusion/issues/1916#issuecomment-1058769722


   Actually I think Ballista should act as a distributed computing framework 
like Spark Core. Like Spark is based on the RDD, Ballista is based on the 
ExecutionPlan for the DAG.
   
   Based on this framework, Ballista should also include several kinds of 
deployments. Currently, only standalone mode is provided. In the future, it's 
possible to introduce more resource managers, like Yarn, Mesos, etc.
   
   For the SQL part, I think it should be an independent part. The core of 
Ballista should not depend on the SQL. 
   
![Picture1](https://user-images.githubusercontent.com/90197956/156688633-6789dc67-a2c6-444b-9e9d-d4bf415d1c87.png)


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