Matt Gilman created NIFI-13155:
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             Summary: Revision check in Flow Reducer
                 Key: NIFI-13155
                 URL: https://issues.apache.org/jira/browse/NIFI-13155
             Project: Apache NiFi
          Issue Type: Sub-task
          Components: Core UI
            Reporter: Matt Gilman
            Assignee: Matt Gilman


In the flow reducer we should be verifying that the incoming revision is newer 
than what is already saved. These scenarios can occur when polling takes longer 
when some other action. For slow connections this happens ofter as the size of 
the canvas payload increases.

We also need to handle corner cases when the component as been deleted [1] and 
when a node's cluster connection state changes [2].

[1] https://issues.apache.org/jira/browse/NIFI-2719

[2] https://issues.apache.org/jira/browse/NIFI-3848



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