nifi join two or multiple csv base on single schema in nifi

[#1]

i want to join multiple csv base on ID with single schema.

[#2]

You probably want the LookupRecord processor using a CSVRecordLookupService. It can only look up from one CSV at a time, but you can have multiple in a row to lookup additional tables.

[#3]

Please see: https://community.hortonworks.com/questions/243915/outer-join-two-csv.html

or https://gist.github.com/ijokarumawak/b9c95a0d0c86c97ffeaeb5ef95320b8b