Nifi counters just an empty list

[#1]

Hello there,

I learned about nifi counters, but when I open my nifi instance and click on the counters button in the main menu, it just opens an empty list. Same when I call nifi-api/counters. It is just an empty list. I do have processors and processgroups running.

So does anyone have an explanation why that is? I use nifi 1.23.2 on my local machine. Thanks in advance!

[#2 · Accepted solution]

@Fredi 

I am not completely clear on your question here.

Unless you have a dataflow built and running that has implemented some counter, then nothing is going to show in the NiFi Counters UI.

But once you have components running like UpdateCounter, the counter UI would get populated:

NiFi counters do not persist through a NiFi restart.  After a restart the Counters UI will be blank again until a counter is generated by component that writes to a counter.

Please help our community thrive. If you found any of the suggestions/solutions provided helped you with solving your issue or answering your question, please take a moment to login and click "Accept as Solution" on one or more of them that helped.

Thank you,
Matt

[#3]

Hi Matt, thank you for your quick response. I thought that all processors have a built in counter, so I expected to see some no matter what processors are running.