Compare Two csv files using Apche Nifi

[#1]

CSV file 1

Account Name zoneId CountryId

1 Rahul 1111112 12223

2 Mukesh 1232343 98765

3 Rajesh 1234543 76823

CSV file 2

Account Name zoneId CountryId

1 Rahul 1111112 13323

2 Mukesh 5532343 98765

Output File

Account Name zoneId CountryId

1 Rahul 1111112 13323

2 Mukesh 5532343 98765 

I have a scenario i am recieving the 2 csv files (csv file 1 & csv file 2) from sftp location and i have to compare the difference between the two files and give the output file (Output File) as result to a API. perform this operation using Apche nifi. Please suggest me a approach to perform this operation Using Apche Nifi processors.

[#2]

How far apart are the files received from a time perspective?

[#3]

And how to check the settings for saving records?