Good point Russell, we upgraded NiFi Registry last time in March 2020, since 
then two new versions came out, that’s correct. We plan to upgrade to NiFi 
Registry 0.7.0 together with NiFi v.1.12.0.

To be honest, I don’t expect that the issue is on Registry side. But I’m 
curious what other people think. I’m not even able to troubleshoot the issue…

I searched for Jira Bugtickets and found some context related issues which will 
be fixed on NiFi 1.12.0 
(<https://issues.apache.org/jira/browse/NIFI-7536>NIFI-7536 / NIFI-7627). 
However nothing exactly matched to my issue.

Cheers Josef

From: Russell Bateman <[email protected]>
Reply to: "[email protected]" <[email protected]>
Date: Monday, 17 August 2020 at 15:27
To: "[email protected]" <[email protected]>
Subject: Re: Change Version not possible due to setting a Parameter Context for 
a Process Group

Forgive me for asking, but I'm curious. NiFi Registry 0.5.0 is fully two 
versions behind the current one. Wouldn't using the latest be a precursor to 
sorting out problems? Bugs may have been fixed. Or, is there something good 
known to be expected from the older Registry that the newest one doesn't offer 
in terms of migrating from variables to parameters?
On 8/17/20 6:04 AM, 
[email protected]<mailto:[email protected]> wrote:
Hi guys

We are using NiFi 1.11.4 with NiFi Registry 0.5.0. We are trying to migrate 
from variables to parameters.

As soon as we are adding a “Process Group Parameter Context” to an existing 
process group and change something else to be able to commit it to the NiFi 
Registry, it seems that the commit gets corrupt. We can’t pull the new version 
on the other NiFI cluster, error message is below:

«Failed to update flow to new version due to 
org.apache.nifi.web.util.LifecycleManagementException: Failed to update Flow on 
all nodes in cluster due to An unexpected error has occurred. Please check the 
logs for additional details.»


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Where can we find the log messages mentioned in the error messages? 
nifi-app.log shows not more than what the GUI shows. How can we troubleshoot 
this or is there any known bug?

We already added some Parameter Context to other Process Groups in the past 
(may be in another NiFi Version?), so in general it was working.

Thanks in advance, Josef


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