https://community.cloudera.com/t5/Support-Questions/merge-too-csv-files-in-nifi/m-p/229263#M191120 <P>Hi <A rel="user" href="https://community.cloudera.com/users/84157/rajatpuchnanda15.html" nodeid="84157">@rajat puchnanda</A>,</P><P>Based on your example, you are trying to do a "join". Nifi is not an ETL tool but more a flow manager, it allow to move data accros system and to do some very simple transformation like csv to avro. You should not do computation or join with Nifi.<BR /><BR />For you usecase it would be better to use another tools like hive, spark,...<BR /><BR />Best regards,<BR />Michel</P> Wed, 13 Jun 2018 21:29:12 GMT msumbul1 2018-06-13T21:29:12Z