Planning Fusionlnsight HD clusters, if customers have no performance requirements for functional testing, under the case of cost savings, they can deploy management nodes, control nodes, and data nodes in one. How many nodes are required at least?

What log download methods does Fusionlnsight HD support? (Multiple choice)

In the Kafka cluster, the role of the Kafka server is

Which component controls the primary and secondary arbitration of NameNodef in HDFS

carriage return as its row separator. In Huawei Fusioninsight Hiver, you can specify the input and output format processing classes of table data.