> Given zero copy streaming in the system … >
For people using vnodes the current implementation of ZCS offers limited benefits. Until ZCS works for vnodes (sstables regardless of token range) I think we need to keep resumable. I doubt that the general 4.0 streaming improvements are enough – many over-capacity clusters still struggle with bootstrapping and resumable can be a lifeline. But +1 to the (improved existing) flag, and adding a warning when it is used.
