Yes the above comment on the functionality not working any longer is accurate. NiFi has gone through many enhancements and therefore not reflected in this article.  I do not plan on updating the article due to the following:   The objective of this article was to get nifi running in K8s because during that time NiFi on K8s offering did not exist within Hortonworks HDF. Recently NiFi on K8s has been GA'd.  It's call DataFlow experience.  Docs here:https://docs.cloudera.com/dataflow/cloud/index.html. If you want NiFi on K8s, that is your new playground.   ... View more

Hello Haris,   we are in the same situation, in my opinion the number of processors is a hard limit in a NiFi cluster. Given the timer-driven architecture, the number of processors running at the same time is heavily influenced by the amount of threads available.   In this regard, any suggestion from NiFi developers is welcome.   For the other questions: the type of processors used and the overall flow design will also have an impact on performance, I would not consider the input volume as a problem since you can scale horizontally.   R. ... View more