if you have only counter columns in your keyspace, and do a lot of updates on a few keys, the getLiveSize() of memtable actually returns the total amount of traffic that has gone into the Memtable, not the real size, so you end up producing very small SStables, with only a few KBytes. (I have already changed the CF.memtable_throughput memtable_operations memtable_flush_after params )
this can be changed easily by modifying the CounterColumn.resolve() so that it updates the currentThroughput with the ***difference **** of old column size and new column size, not just the size of new column.
