A telecommunications companyplanopenexhibitionBigdatabusiness,target businesshavecustomer grouping,calendarHistorical bill analysis, real-time call charge analysis and other services. Which of the following options is the most appropriate in terms of functionality and cost to meet business needs?

Hardware failure is considered normal. In order to solve this problem, HDFS has designed a copy mechanism.
By default, one file, how many copies will HDFS save?

Which of the following application scenarios can HBase be used for? (multiple choice)

Through observation, it can be concluded that the final T3 calculation result is?

In the MRS platform, which component does the Flume data flow not need to pass through in the node?