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https://issues.apache.org/jira/browse/KAFKA-19441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18113906#comment-18113906
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Apoorv Mittal commented on KAFKA-19441:
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[~dajac] seems the PR is merged, shall I resolve the issue?
> Encapsulate MetadataImage in GroupCoordinator
> ---------------------------------------------
>
> Key: KAFKA-19441
> URL: https://issues.apache.org/jira/browse/KAFKA-19441
> Project: Kafka
> Issue Type: Improvement
> Components: group-coordinator
> Affects Versions: 4.0.0
> Reporter: Liz Bennett
> Assignee: Liz Bennett
> Priority: Major
>
> The MetadataImage has a ton of stuff in it and it gets passed around all over
> the place in the new GroupCoordinator. This makes it difficult to understand
> what metadata the group coordinator actually relies on and makes it too easy
> to use metadata in ways it wasn't meant to be used.
>
> If we encapsulate the MetadataImage in an interface that clearly indicates
> what metadata the group coordinator actually uses, it is much easier at a
> glance to see what dependencies it has on the metadata. Also, if the source
> of metadata needs to evolve for whatever reason, we can do so easily by
> wrapping MetadataImage in an interface.
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