The example now at http://hortonworks.com/hadoop-tutorial/how-to-refine-and-visualize-server-log-data/ is working fully for me ,but the hortonworks site is not explaining anything on how the things are working, is there such a document available ? if not can some one please help me understand how these components work ? e.g LogGenerator , Generator FlowFile , Replace Text, Aggregate data, Send Info, Send Error , etc etc. I have a similar task to do of parsing a log file but without understanding how this example works I wont be able to do anything. ... View more

I have a working Nifi dataflow that is pulling the log files and parsing them. Now I want to create a new one doing something else , I don't see any option to save the dataflow , how is it done ? I want to be able to switch between different data flows turning them off when not used. ... View more

I am trying to start all over again with NiFI and trying to get rid of the existing project . I am pressing ctrl-A and hitting DEL but getting error " local port Aggregated Data cannot be removed as it has incoming connections from parent process group ... View more