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https://issues.apache.org/jira/browse/NIFI-8300?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Payne resolved NIFI-8300.
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Fix Version/s: 1.14.0
Resolution: Fixed
> Make non-source processors invalid if scheduled for Primary Node only
> ---------------------------------------------------------------------
>
> Key: NIFI-8300
> URL: https://issues.apache.org/jira/browse/NIFI-8300
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core Framework
> Reporter: Mark Payne
> Assignee: Hsin-Ying Lee
> Priority: Major
> Fix For: 1.14.0
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> There is never a reason a to schedule a processor to run on Primary Node Only
> unless the processor is a source processor. However, we see this misused
> fairly frequently, and it can result in data not moving through the system.
> We should update the processor validation logic so that a processor is made
> invalid if has an Execution Node of Primary Node Only and has any incoming
> connections.
> This includes self-looping connections. Otherwise, Node A can be primary
> node, and then queue up data. Node B then becomes Primary Node, leaving data
> sitting on Node A indefinitely.
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