public List<column_t> get_columns_since(String tablename, String key, String columnFamily_column, long timeStamp) throws CassandraException,TException
{
long startTime = System.currentTimeMillis();
try
{
ColumnFamily cfamily = readColumnFamily(new ReadCommand(tablename, key, columnFamily_column, timeStamp));
String[] values = RowMutation.getColumnAndColumnFamily(columnFamily_column);
if (cfamily == null)
{
logger_.info("ERROR ColumnFamily " + columnFamily_column + " is missing.....: "+" key:" + key + " ColumnFamily:" + values[0]);
throw new CassandraException("Either the key " + key + " is not present or the columns requested" + columnFamily_column + "are not present.");