A.Credit Evaluation

B.Product recommendation

C.Operational Analysis

D.Business model discovery

A.The client writes the entire file to each DataNode in sequence according to the address information of the DataNode, and then the DataNode divides the file into multiple blocks

B.The client only uploads data to one DataNode, and then the NameNode is responsible for block replication

C.The file data of the client is passed to the DataNode through the NameNode

D.The client divides the file into multiple blocks, and writes them to each DataNode in sequence according to the address information of the DataNode

A.The storage level of each Partition corresponds to a log file, and all information data is recorded in the log file

B.Each Topic can only be divided into one partition (area)

C.The number of partitions of Topic can be configured at the time of creation

D.Each message published to Kafka has a category. This category is called Topic, which can also be understood as a queue for storing messages.

A.Resource management

B.Aggregated Statistical System Operational Data

C.Site Activity Tracking

D.Log Collection

A.Mesos

B.YARN

C.Standalone

D.Docker