Index size

Hi Shay,
storing _source is interesting approach, not thought about it, just wanted
to ask is it really will help ? The "data" (all values list) field that
actually indexed but not stored and _source field will be indexed but not
stored. Today "data" field it's not stored, only indexed and then if I add
_source to storage this only will increase indexes size or may be I didn't
get you ?

Thank You.

P.S. I did optimize call win max_segments = 1 size remains the same.