A.Shuffle Grouping

B.Direct Grouping

C.Field Grouping

D.Local Grouping

A.Executor

B.Driver

C.Application Master

D.Client

A.1

B.3

C.2

D.4

A.Parallel collection with MapReduce tasks

B.Support distributed and streaming collection

C.Only structured data can be collected

D.Use external timing tasks to trigger data collection

A.The ticket obtained by executing this command will time out after 24 hours. You need to execute the kinit command again to log in again.

B.A client does not support simultaneous use of multiple accounts.

C.Only human-machine accounts can be used.

D.Only machine-to-machine accounts can be used.