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How to count how many flows in upsteam or waiting in the queue?

New Contributor

Hi, I am wondering if there is a way in NiFi that can count how many flows from upstream or in the queue that waiting for process during run time \ from the next level of processor?


Saw some people talked about can invoke NiFi native API to get how many flows in the queue. However, during some reason, my access scope are not allowed to communicate NiFi API during my NiFi flow run time. Some NiFi guru or expert may advice a way as a solution?