cloud-fan commented on issue #24759: [SPARK-27395][SQL][WIP] Improve EXPLAIN 
command
URL: https://github.com/apache/spark/pull/24759#issuecomment-521900642
 
 
   cool thanks!
   
   We also need to discuss how to roll out this feature. It's a little 
aggressive to me to just replace the legacy explain format with the new one.
   
   For SQL, maybe we can use the new format for `EXPLAIN FORMATTED ...`. 
Currently `FORMATTED` is treated the same as `EXTENDED`, which is not very 
ideal.
   
   For Java/Scala, I don't have a good idea now. We don't even have `EXPLAIN 
COST` in Java/Scala API, maybe we can leave it for now.

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