[jira] [Created] (NIFI-11394) If changing flow version and a port is modified and running, will fail to update

["Mark Payne (Jira)" <ji...@apache.org>]

Mark Payne created NIFI-11394:
---------------------------------

             Summary: If changing flow version and a port is modified and running, will fail to update
                 Key: NIFI-11394
                 URL: https://issues.apache.org/jira/browse/NIFI-11394
             Project: Apache NiFi
          Issue Type: Bug
          Components: Core Framework
    Affects Versions: 1.21.0
            Reporter: Mark Payne


To replicate:

Create a Process Group, named Parent

Within it, create an Input Port, "Input" and connect it to an UpdateAttribute Processor.

Save this as Version 1

Then, create a Child PG, "Child". Move the Input Port, the connection, and the UpdateAttribute Processor within the Child. Then, at the Parent level, create a GenerateFlowFile processor and connect it to the Child's Input Port.

Save this as V2 of the flow.

Start running the flow at the Parent level.

Change the flow back to V1.

It will stop the components and then fail, indicating that it failed while waiting for Processors to stop.

In the user log, there will be an entry along the lines of:
{code:java}
2023-04-06 16:37:57,898 INFO [NiFi Web Server-27] o.a.n.w.a.c.ResourceNotFoundExceptionMapper org.apache.nifi.web.ResourceNotFoundException: Unable to find processor with id 'fa651d99-e230-3416-95e5-5e5686a9ad41'.. Returning Not Found response.{code}
The ID listed there is the ID of the Port. The issue appears to be that it is providing the Port ID as the ID of a processor to stop.

At this point, the flow is stopped (or at least the relevant components are). So a simple work around is attempting the Change Version the second time, which succeeds. The components can be restarted.



--
This message was sent by Atlassian Jira
(v8.20.10#820010)