Do the overwrites of newly written columns(that are present in memtable) *replace the old column* or is it just a simple append.
I am trying to understand that if I update these column very very frequently(while they are in memtable), does the read performance of these columns gets affected, since Cassandra will have to read so many versions of the same column. If this is just replacement with old column then I guess read will be much better since it needs to see just single existing version of column. Thanks Aditya Narayan
