Ignore fields in search index I have a site with ~ 25000 entries, and around 130 custom fields.  I tried to rebuild the search index and it didn't complete after 8hours of running none stop.  Whilst I'm sure this can be blamed on the Server to some degree, I can see that my search index table has just short of 700000 rows, which I'm guessing takes a reasonable amount of time to create.

I was sure that I'd seen somewhere a way to hide/exclude fields from the search index, but looking now I can't find anyway to omit specific fields from the search index, which I would expect to reduce the load on the search indexer, there are only very few fields that I actually want the system to actually search by so I'm hoping there's a solution to this, I can reduce the load on the server and speed up the reindexing.

Thanks
As of Craft 3, there is a RegisterElementSearchableAttributesEvent event that a plugin can listen to to change modify what gets saved to the search index table when an element is saved.