Key from = new Key(val, true);
Key to = new Key(val, true);
byte[] rowKey = scanInfo.getRowKey();
CompositeRangeBuilder range = CassandraSession.setupRangeBuilder(from, to, info1, reverse);
ColumnFamilyQuery query = keyspace.prepareQuery(cf);
RowQuery<byte[], byte[]> rowQuery = query.getKey(rowKey).withColumnRange(range);
Future future = executeAsync(rowQuery);
futures.add(future);
}