I suspect this will kill the benefit of DTCS, but haven't tested it to be
100% here.
The benefit of DTCS is that sstables are selected for compaction based on
the age of the data, not their size. When you mix TTL'ed data and non
TTL'ed data, you end up screwing with the "drop the entire SSTable"
I have a potential use case I haven’t had a chance to prototype yet, which
would normally be a good candidate for DTCS (i.e. data delivered in order and a
fixed TTL), however with every write we’d also be updating some static cells
(namely a few key/values in a static map CQL column). There coul