In addition to writing null values acting as tombstones, also INSERTing a collection (or UPDATE where you set the collection rather than append to it) are also operations which will create tombstones.
On Wed, Mar 23, 2016 at 12:09 PM Robert Coli <rc...@eventbrite.com> wrote: > On Wed, Mar 23, 2016 at 9:50 AM, Ralf Steppacher <ralf.viva...@gmail.com> > wrote: > >> How come I end up with that large a number of tombstones? >> > > Are you inserting NULLs? > > =Rob > >