A.RDD具有血统机制(Lineage)
B.RDD默认存储在磁盘
C.RDD是一个只读的,可分区的分布式数据集
D.RDD是Spark对基础数据的抽象
"Spark" in the sixth Paragraph means______.
A.cause
B.flame
C.burn
D.reason
applause collision coarse surround betray
rouse spark incident execute postpone
clumsy extraordinary relief immense doubtful
The lightning-like spark is created by ______.
A.the movement of the dome
B.the repelling between the collected electrons
C.the escaping of the electrons from the dome
D.the collection of many electrons on the dome