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https://issues.apache.org/jira/browse/NIFI-15342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18045161#comment-18045161
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WojciechWitos commented on NIFI-15342:
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[~pvillard]
After further investigation it was site-to-site reporting task who couldn't be
updated because was still "running". When disabled tasks and flows which were
making use of those on version 2.6 and then upgraded to 2.7.1 cluster went up.
It seems to be related with: [NIFI-15340] Key Password Property Migration fails
on Management SSL Context Service - ASF Jira
Site-to-site task was causing the differences.
!image-2025-12-15-13-56-52-700.png!
> Node's Flow did not Match Cluster Flow
> --------------------------------------
>
> Key: NIFI-15342
> URL: https://issues.apache.org/jira/browse/NIFI-15342
> Project: Apache NiFi
> Issue Type: Bug
> Affects Versions: 2.7.0, 2.7.1
> Environment: NiFi Clustered version.
> 3 nodes = 4 CPU, 20 GB RAM, RHEL 9
> Reporter: WojciechWitos
> Assignee: David Handermann
> Priority: Major
> Fix For: 2.8.0, 2.7.2
>
> Attachments: image-2025-12-15-13-56-52-700.png
>
>
> Hi!
> During standard upgrade of NiFi from version 2.6 to 2.7.0 and later on 2.7.1
> we've faced an issue with cluster - using embeded zookeeper.
> After turning on NiFi cluster couldn't synchronize due to the differences in
> the flow.
> Flow.json.gz has been removed from 2 hosts (3 in the cluster).
> Also flow couldn't be synchronized. The only error which we get in the
> nifi-app.log is:
> {code:java}
> 2025-12-15 09:48:41,645 INFO [Process Cluster Protocol Request-45]
> o.a.n.c.c.node.NodeClusterCoordinator Status of XXXXX:8443 changed from
> NodeConnectionStatus[nodeId=XXXXXX:8443, state=DISCONNECTED, Disconnect
> Code=Node's Flow did not Match Cluster Flow, Disconnect
> Reason=org.apache.nifi.controller.serialization.FlowSynchronizationException:
> Failed to connect node to cluster because local flow controller partially
> updated. Administrator should disconnect node and review flow for
> corruption., updateId=44] to NodeConnectionStatus[nodeId=XXXXX:8443,
> state=DISCONNECTED, Disconnect Code=Node's Flow did not Match Cluster Flow,
> Disconnect
> Reason=org.apache.nifi.controller.serialization.FlowSynchronizationException:
> Failed to connect node to cluster because local flow controller partially
> updated. Administrator should disconnect node and review flow for
> corruption., updateId=44] {code}
>
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