zsxwing commented on pull request #30521:
URL: https://github.com/apache/spark/pull/30521#issuecomment-737308122


   > You have no idea of output mode in DSv1, and that's what I have been 
concerned about.
   
   We pass the output mode to the sink here: 
https://github.com/apache/spark/blob/084d38b64ecbcaa9fac47ffca5604cf2a72936fc/sql/core/src/main/scala/org/apache/spark/sql/sources/interfaces.scala#L154
   
   > I have lots of concerns on creating table
   
   Could you clarify this? We create an output path if it doesn't exist since 
the beginning in streaming, and I have not heard complaints about this. Why not 
make the behavior of creating table consistent with creating an output path?
   
   


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