Hello all, How does TWCS work when decommissioning a node? Does the data distribute across the other nodes to the current time window's sstable (like read-repairs)? Or will it compact into the sstables for the prior windows? If that's how it works, how does it decide what sstable to compact with? E.g.., if I ran a major compaction on one node (pushing everything into a few sstables), then decommissioned it, what would you expect to see on other nodes? Would the data distribute across all sstables based on the row's timestamp?
I'm also a little unclear on how cleanups work. If I run a nodetool cleanup, will that actually re-write the old, but not completely expired sstables of prior time windows? Or are those sstables truly immutable? I've read through the documentation ( http://cassandra.apache.org/doc/latest/operating/compaction.html#time-window-compactionstrategy) and a few other resources ( http://thelastpickle.com/blog/2016/12/08/TWCS-part1.html), but I still don't have a clear understanding of how it works. Any clarification would be greatly appreciated. Thanks! Ben
