Incase of only dropping columns(without any transformations or business rules), we can go for copy stage instead of transformer.But can anyone tell me exactly why copy stage is better in performance than transformer?

Lalit

• Oct 9th, 2017

Look Copy stage is made up for only copying data and transformer stage is made up for multiple functionalities and also it is made up of c++ code. So if you want to only copy data and rename datatypes...

Atangel

 Profile Answers by Atangel Questions by Atangel

• Oct 12th, 2012

Transformer is a heavier stage as apart from the orchestrate we do have the C++ operators for various derivations. Right from compilation to execution a Transformer will always take more time than a copy stage which is a simple straight forward passive(if we can call) stage

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