code: public Map<String, String> getMulti(String columnName, String... keys) {
      MultigetSliceQuery<String, String,String> q = createMultigetSliceQuery(keyspace, serializer, serializer, serializer);
      q.setColumnFamily(columnFamilyName);
      q.setKeys(keys);
      q.setColumnNames(columnName);
  
      QueryResult<Rows<String,String,String>> r = q.execute();
      Rows<String,String,String> rows = r.get();
      Map<String, String> ret = new HashMap<String, String>(keys.length);
      for (String k: keys) {
        HColumn<String, String> c = rows.getByKey(k).getColumnSlice().getColumnByName(columnName);
        if (c != null && c.getValue() != null) {
          ret.put(k, c.getValue());
        }
      }
      return ret;
    }
docs: Get multiple values
  @param keys
  @return