[jira] [Updated] (NIFI-6879) Variable Updater Error when trying to change variable used inside a Process Group

["Marcio Sugar (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NIFI-6879?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Marcio Sugar updated NIFI-6879:
-------------------------------
    Environment: 
Host OS: Ubuntu 16.04
Docker version 19.03.4, build 9013bf583a
Docker Image: apache/nifi 1.10.0 4310dad3312f

  was:Ubuntu 16.04


> Variable Updater Error when trying to change variable used inside a Process Group
> ---------------------------------------------------------------------------------
>
>                 Key: NIFI-6879
>                 URL: https://issues.apache.org/jira/browse/NIFI-6879
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Core Framework
>    Affects Versions: 1.10.0
>         Environment: Host OS: Ubuntu 16.04
> Docker version 19.03.4, build 9013bf583a
> Docker Image: apache/nifi 1.10.0 4310dad3312f
>            Reporter: Marcio Sugar
>            Priority: Major
>
> This works fine in NiFi 1.7.1 but fails in NiFi 1.10.1.
> Whenever I try to change the value of a variable that's defined outside a Process Group where it's used, NiFi fails during the Applying Updates with the following message (image also attached):
> {noformat}
> Variable Update Error
> Unable to complete variable update request: Failed to update Variable Registry because failed while performing step: Applying updates to Variable Registry.{noformat}
> To reproduce the problem:
>  # On the top-level canvas, create a variable named "myvar", and set it to "{{blah}}".
>  # Create a Process Group named "mypg".  Enter the group. 
>  # Inside "mypg", add a GenerateFlowFile and set its "Run Schedule" to "1 day" to get just one flow file when it's started.
>  # Still inside "mypg", add a LogMessage. Set its "Log prefix" to "{{MYLOG:}} " and its "Log message" to "{{My message is: '${myvar}'.}}"
>  # Start both processors and see a message like this appeared in the application's log:  {{MYLOG: My message is: 'blah'.}}
>  # Now leave the "mypg" Process Group and go back to the top-level canvas. Try to set the "myvar" variable to a different value, like "{{blah-blah}}". NiFi starts the steps to make the change, but fails during the "Applying Updates" step with the above error message.
> Images and log file attached.
>  



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