How does range scan work in Cassandra? Does the read of a key perform the read across all the SSTables that contain the key and return the row or are SSTables processed sequentially? If I have a key k and its columns are spread across N SSTables then does the read of key k return the row with all the columns spread across N SSTables or does it process each SSTable and return a row with whatever columns it finds in the processed SSTable.
