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https://issues.apache.org/jira/browse/KAFKA-7075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16744720#comment-16744720
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Lionel Montrieux commented on KAFKA-7075:
-----------------------------------------
[~twbecker] I spent some time on this yesterday. I need to write some
integration tests, which I'm not quite certain how to approach, but I should
have time this weekend to give it a go.
> Allow Topology#addGlobalStore to add a window store
> ---------------------------------------------------
>
> Key: KAFKA-7075
> URL: https://issues.apache.org/jira/browse/KAFKA-7075
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Reporter: Guozhang Wang
> Assignee: Nishanth Pradeep
> Priority: Major
> Labels: newbie
>
> Today although {{Topology#addGlobalStore}} can take any {{StateStore}} types,
> the internal implementation {{InternalTopologyBuilder#addGlobalStore}} only
> accepts {{StoreBuilder<KeyValueStore>}}. It means if users pass in a windowed
> store builder in {{Topology#addGlobalStore}} it will cause a runtime
> ClassCastException.
> We should fix this issue by relaxing the {{InternalTopologyBuilder}}.
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