Which of the following descriptions of data management and architecture faced by traditional enterprises is correct? (Multiple choice)

The label-based scheduling of YARN is to label which of the following options?

SELECT aa.salarybB. address FROM employee aa JoiN SELECT adress FROM employee info where provine='zhejiang') What types of operations does bb ONaa.nanme=bB. name contain?

The checkpoint mechanism in Flink continuously draws snapshots of streaming applications, and the state snapshots of streaming applications can only be saved in the HDFS file system.

The following figure shows the storage locations of files A, B, C, and D.
Among them, A and B are related, and their storage locations conform to the colocation strategy of Colocation.