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https://issues.apache.org/jira/browse/NIFI-8040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17238367#comment-17238367
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Bryan Bende commented on NIFI-8040:
-----------------------------------
Hi [~vgoodvin] , thanks for issue and patch. What version of nifi did this
happen on? latest is 1.12.1
> Failed to update Flow on all nodes in cluster due to Cannot modify Processor
> configuration while the Processor is running
> -------------------------------------------------------------------------------------------------------------------------
>
> Key: NIFI-8040
> URL: https://issues.apache.org/jira/browse/NIFI-8040
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Reporter: Vasily Gudoshnikov
> Priority: Major
> Labels: registry
> Attachments: ProcessorNode.patch, image-2020-11-24-15-57-26-995.png
>
>
> Relates to NIFI-5227
> Steps to reproduce:
> # Create a simple flow: *GenerateFlowFile + UpdateAttribute*. Ensure both
> processors have valid state.
> # Commit flow to a registry.
> # Remove connection between processors or do something else to move
> *UpdateAttribute* in invalid state.
> # Commit flow to a registry.
> # Change flow version to "1". *UpdateAttribute* should be valid now.
> # Run *UpdateAttribute*
> # Change flow version to "2". Ensure *UpdateAttribute* has invalid state now.
> # Change flow version back to "1".
> You will see error message _"Failed to update Flow on all nodes in cluster
> due to Cannot modify Processor configuration while the Processor is running"._
> _!image-2020-11-24-15-57-26-995.png!_
> Error message for single node (non cluster) will be similar.
> See attached patch. My solution is quite simple but I don't sure may be it is
> not good enough.
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