NiFi 2.11.0: Inherited Parameters Become Local when Adding Inheritance

[Volker Klasen via users <us...@nifi.apache.org>]

Hello,

I am writing to the mailing list as suggested on the "self service signup page".

In NiFi 2.11.0 we're observing a bug that inherited parameters become local ones when adding an inheritance. As another effect, when using multiple hierarchies sensitive values get set as local parameters with stars as value. This was working without issue in 2.10.0.

How to reproduce:

  *
Create a parameter context named "test" without parameters
  *
Create a parameter context named "test2" with on parameter
  *
Edit parameter context "test" to inherit from "test2" and save
  *
Edit parameter context "test", remove the inheritance from "test2" and save
  *
Edit "test" again and notice that the parameter from "test2" is still present and shown as inherited, while no inheritance is present
  *
Look into current flow.json and notice that parameter context "test" has the parameter from "test2" as local parameter set
  *
Optional: delete parameter context "test2", log out and in again and notice that the parameter context page cannot be opened anymore
  *
Restart Nifi to fix the "ghostly" inheritance and notice that parameter context "test" now has a local parameter

It looks like the issue occurs only when adding an inheritance, existing inheritances from before 2.11.0 work as expected.

Workaround for adding parameter contexts in 2.11.0 correctly:

  *
Add the inheritance you want to have
  *
Restart NiFi
  *
Remove the local "copies" of inherited parameters from the child parameter
  *
Now the context has only the (correctly) inherited parameters (and any other local parameters)

This issue might be related to https://issues.apache.org/jira/browse/NIFI-16226 and maybe caused by https://issues.apache.org/jira/browse/NIFI-16148

Cheers
Volker

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Volker Klasen / Technologie
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