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https://issues.apache.org/jira/browse/NIFI-5096?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16446234#comment-16446234
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ASF GitHub Bot commented on NIFI-5096:
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Github user mcgilman commented on the issue:
https://github.com/apache/nifi/pull/2646
@markap14 I see. It appears then that the underlying issue is that either
(1) the stateChange method is not being invoked or (2) the leader thread
interruption is not happening/working. We could include your proposed changes
and update our implementation of stateChanged to set `leader` to false when the
`newState` is LOST or SUSPENDED before invoking super. Additionally, in
`takeLeadership` we should loop while not stopped and is leader. This should
help if the underlying issue was (2) while the polling could act as additional
insurance.
> When Primary Node changes, occasionally both the new and old primary nodes
> continue running processors
> ------------------------------------------------------------------------------------------------------
>
> Key: NIFI-5096
> URL: https://issues.apache.org/jira/browse/NIFI-5096
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Reporter: Mark Payne
> Assignee: Mark Payne
> Priority: Major
>
> Occasionally we will see that Node A is Primary Node and then the Primary
> Node switches to Node B, resulting in both Node A and Node B running
> processors that are marked as Primary Node only.
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