tanmesh commented on PR #9184:
URL: https://github.com/apache/pinot/pull/9184#issuecomment-1215475612

   thanks, @Jackie-Jiang for providing context. Very helpful. 
   
   I am trying to understand how `ExtractTransformFunction` will be used in the 
overall flow (write path and read path). I have a few follow-up ques from my 
investigation:
   
   - Do we store the transformed data (after applying transformations as 
defined 
[here](https://github.com/tanmesh/pinot/tree/e594388c20823d3b02efbec878855b8b2dfe9d51/pinot-core/src/main/java/org/apache/pinot/core/operator/transform/function)
 on raw data) into segments or only raw data into segments and apply the 
transformations on the fly during Pinot query execution?
   


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