A.message reliability

B.flexibility

C.Scalability

D.Disaster recovery capability

A.The ZKFC process needs to be deployed in NameNodel's node and Zookeeper's Leader node

B.Standby NameNodej perceives the status of Active NameNodel through Zookeeper. Once the Active NameNode is down, the Standby NameNode will perform the main upgrade operation.

C.The ZKFC of HDFS NameNodel connects to Zookeeper, and saves the host name and other information in Zookeeper

D.ZKFC (ZKFailoverController) is used as a Zookeeper cluster client to monitor the status information of NameNodel

A.Turn off persistence

B.Reduced key value

C.Limit Redis memory size

D.slowlog configuration

A.Distributed file system

B.Distributed memory computing engine

C.Unified scheduling of cluster resources

D.Stream processing capabilities

A.No shortcomings in performance

B.Realize the autonomous control of some equipment

C.Single component (for example: HDFS) supports mixed deployment of Kunpeng server and X86 server

D.Supports mixed deployment of Kunpeng servers and ordinary X86 servers in a single cluster