Mark Payne created NIFI-8018:
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Summary: Introduce a Flow Sequence ID to both flow.xml.gz and
Provenance events
Key: NIFI-8018
URL: https://issues.apache.org/jira/browse/NIFI-8018
Project: Apache NiFi
Issue Type: Improvement
Components: Core Framework
Reporter: Mark Payne
By default, every time a user makes a change to a NiFi dataflow, we write a
backup of the flow to the archive directory first. We should introduce a new
'flowSequenceId' that is a one-up counter every time that a flow is updated.
This should be stored in the flow.xml.gz. That will cause it to also be present
in the archived flows.
Additionally, ensure that when a flow is inherited from cluster, that we update
the internal state to match the sequence id from the cluster's flow.
Then, when generating provenance events, we should include the flow sequence id.
By doing this, it means that whenever a user views a particular Provenance
Event, they will have the unique Sequence ID of the flow. That flow can then be
retrieved from the archive in order to ensure that any unexpected behavior that
is shown in the Provenance Events can be correlated to the flow as it was at
the time, rather than looking at the flow as it exists currently.
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