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https://issues.apache.org/jira/browse/NIFI-5769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17281913#comment-17281913
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Mark Payne commented on NIFI-5769:
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This PR caused an issue that is fixed by NIFI-5905
> FlowController should prefer composition over inheritance
> ---------------------------------------------------------
>
> Key: NIFI-5769
> URL: https://issues.apache.org/jira/browse/NIFI-5769
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core Framework
> Reporter: Mark Payne
> Assignee: Mark Payne
> Priority: Major
> Fix For: 1.9.0
>
>
> Currently, FlowController implements many different interfaces. At this time,
> the class is several thousand lines of code, which makes rendering take quite
> a while in IDE's and makes it more difficult to edit and maintain. Many of
> these interfaces are unrelated and FlowController has become a bit of a
> hodgepodge of functionality. We should refactor FlowController to externalize
> a lot of this logic and let FlowController use composition rather than
> inheritance.
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