I think the most straight forward would be to drop the infer schema into your version of NiFi.   The procedure is not that hard, you just have to be surgically careful.  The process is explained a bit here in reference to adding parquet jars from new version, into older version.   Be sure to read all the comments:   https://community.cloudera.com/t5/Support-Questions/Can-I-put-the-NiFi-1-10-Parquet-Record-Reader-in-NiFi-1-9/td-p/286465   ... View more