A.HMaster

B.Zookeeper

C.DataNode

D.RegionServer

A.Mass data operation and maintenance needs to ensure data stability and support high concurrency while increasing server burden.

B.Traditional databases do not consider the diversity of data, and are especially compatible with structured data, unstructured data and semi-structured data.

C.Traditional databases do not require high data processing time, while big data requires real-time data processing

D.Traditional databases are not suitable for processing PB of data.

A.JDBC Channel

B.HDFS Channel

C.Memory Channel

D.File Channel

A./srv/BigData/hadoop/data5

B./srv/BigData/zookeeper

C./srv/BigData/jumalnode

D./srv/BigData/dbdata-om

E./srv/BigData

A.C

B.C++

C.Scala

D.JAVA