A.Ability to use Hadoop formatted input and output

B.YARN can be used as the resource scheduling manager of Flink cluster

C.Ability to obtain data locally

D.Can be mixed with Hadoop's original mappers and reducers

A.Qualifier HBase column: each column represents a certain attribute of business data

B.Column user table column: each column represents a KeyValue

C.Visual modeling helps DBA perform modeling and design, lowering the threshold for using HBase

D.Realize the division of labor: DBA pays attention to data table modeling, and developers pay attention to user table names and columns used

A.Download the log of the specified host

B.Download the log of a module of a single component

C.Download logs for the specified time period

D.Download the logs of all components of the installed components

A.SFTP Server

B.MySQL

C.NoSQL

D.FTP Server

A.2, 3, 3

B.1, 2, 2

C.1, 3, 2

D.2, 3, 1