Pierre Villard created NIFI-15785:
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Summary: 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
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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