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https://issues.apache.org/jira/browse/NIFI-9893?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul Grey updated NIFI-9893:
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Status: Patch Available (was: In Progress)
https://github.com/apache/nifi/pull/5946/
> Ensure orderly cluster node removal on node delete via UI
> ---------------------------------------------------------
>
> Key: NIFI-9893
> URL: https://issues.apache.org/jira/browse/NIFI-9893
> Project: Apache NiFi
> Issue Type: Improvement
> Reporter: Paul Grey
> Assignee: Paul Grey
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When a NiFi cluster node is deleted (via the UI), a series of steps is
> executed to update the cluster state. If the node is being deleted due to
> node process failure, then any attempt to communicate with that node will
> fail, causing an exception.
> In `NodeClusterCoordinator.removeNode()`, the sequence of steps could be
> improved to perform the deletion before the node participants are notified.
> This reduces the chance that node failure will prevent the UI operation from
> completing.
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