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https://issues.apache.org/jira/browse/NIFI-15785?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pierre Villard updated NIFI-15785:
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Status: Patch Available (was: Open)
> Update parameter and parameter context descriptions during versioned flow
> upgrade
> ---------------------------------------------------------------------------------
>
> Key: NIFI-15785
> URL: https://issues.apache.org/jira/browse/NIFI-15785
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Flow Versioning
> Reporter: Pierre Villard
> Assignee: Pierre Villard
> Priority: Major
>
> When upgrading a versioned process group from version N to N+1, parameter
> descriptions for existing parameters are silently dropped. The
> {{addMissingConfiguration}} method in
> {{StandardVersionedComponentSynchronizer}} skips any parameter that already
> exists, meaning description-only changes are never applied. Similarly,
> {{VersionedFlowSynchronizer.updateParameterContext}} only includes a
> parameter in the update set when its value or asset references changed,
> ignoring description differences entirely.
> This has two consequences:
> # After upgrading from N to N+1, the parameter descriptions remains at their
> version N values.
> # If the user then makes changes and commits as version N+2, the stale
> version N descriptions are written back to the registry, overwriting the
> version N+1 descriptions.
> The same gap exists for the parameter context description itself (the
> context-level description, not just per-parameter descriptions).
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