CarlosJuncher03 commented on issue #6850:
URL: https://github.com/apache/hop/issues/6850#issuecomment-4238869056

   I understand your point, and I agree this should not replace the current 
preview behavior.
   What I had in mind was just an optional safe preview mode, so developers 
could inspect the pipeline without risking writes to databases or files. For 
me, the main benefit is in day-to-day development. Right now, if the developer 
still has to manually disable output steps, it often becomes easier to just run 
the pipeline normally instead of using Preview. Because of that, Preview ends 
up not being used as much as it could be. So the idea is less about changing 
Preview itself, and more about making it practical and safe enough to actually 
be useful during iteration. I also agree that some cases may require real 
updates during Preview, which is why I think this only makes sense as an option.
   Even a limited version, focused on blocking the most common output steps, 
would already be very helpful.


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