My Custom Processor is not visible in the Nifi UI

[#1]

When I add a new custom processor in the code, At Nifi UI processor list is shown but the processor that I created is not coming in the list. Although it is added one time in the UI but when I am trying to add it again it is not coming in the processor list.

And when I am trying to copy the existing processor then it says, not a valid processor type. What is wrong here?

[#2 · Accepted solution]

This is because I have not made the entry of that processor in below file

/src/main/resources/META-INF/services/org.apache.nifi.processor.Processor

We should make entry of processor in that file with the complete package path for e.g. org.nifi.processors.FileModifierProcessor