B.Carbon使用轻量级压缩和重量级压缩的组合压缩算法压缩数据,可以减少60%-80%数据存储空间,大大节省硬件存储成本
C.Carbon是一种新型的ApacheHadoop本地文件格式,使用先进的列式存储.索引.压缩和编码技术,以提高计算效率,有助于加速超过PB数量级的数据查询,可用于更换的交互查询
D.Carbon也是一种将数据源与Spark集成的高性能分析引擎
A.能基于Atlas的Web页面查询用户的数据查询操作历史
B.能基于Atlas的Web页面浏览数据的血缘关系
C.能基于Atlas的Web页面标注元数据,为元数据分类
D.Atlas支持与Hive数据源的集成,可以实时获取Hive的元数据变化
There is an experiment for this, or at least an observation, make long ago by Karl Von Frisch and more recently confirmed by James Gould at Princeton, Biologists who wish to study such things as bee navigation, language, and behavior. in general have to train their bees to fly from the hive to one or another special place. To do this, they begin by placing a source of sugar very close to the hive so that the bees (considered by their trainers to be very dumb beasts) can learn what the game is about. Then, at regular intervals, the dish or whatever is moved progressively father and farther from the hive in increments (增长) of about 25 percent at each move. Eventually, the target is being moved 100 feet or more at a jump, very far from the hive. Sooner or later, while this process is going on, the biologists shifting the dish of sugar will find the bees are out there waiting for them, precisely where the next position had been planned. This is an uncomfortable observation to make.
With what subject is the passage mainly concerned?
A.The bee, a social animal.
B.Navigational techniques of bees.
C.Testing the awareness of bees.
D.The bee hive, nature's candy shop.
A.move
B.fly
C.steer
D.swim