[Samba] Windows search equivalent on Samba?

[Viktor Trojanovic]

In a pure Windows environment I'm helping manage, I recently had to set 
up full text indexing on a file share. Since it's not possible to 
actually index a file share from the client side, this has to be done on 
the server itself and in case of Windows Server, this is done using the 
Windows Search service. It's very easy to set up, too, just takes a few 
clicks.

And Samba? A quick search on Google finds a Suse slide set from the 2015 
SambaXP where this feature was discussed and certain development seems 
to have happened but I couldn't find much after that, maybe someone here 
can offer a current insight.

So, does Samba today support a full text index, either natively or using 
third party tools, that's compatible with Windows Search? And can anyone 
comment on what kind of performance disadvantage we're speaking about 
when comparing full text on an indexed Windows file share and a 
non-indexed Samba share?

Viktor