Part 1 - In case you missed the Introduction to Apache NiFi
Assumption - HDP and NiFi installation is in place. You can use HDP Sandbox if you don't have the cluster. NiFi installation - You can follow Blog 1
End Goal of this tutorial is to display Tweets related to particular search terms. For example: My twitter id is allaboutbdata and following screenshot shows the tweet sent on Twitter and same tweet in HDFS/Hive and Solr. The whole setup was done using NiFi.