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https://issues.apache.org/jira/browse/KAFKA-4730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16773625#comment-16773625
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ASF GitHub Bot commented on KAFKA-4730:
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guozhangwang commented on pull request #6239: KAFKA-4730: Streams does not have
an in-memory windowed store
URL: https://github.com/apache/kafka/pull/6239
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> Streams does not have an in-memory windowed store
> -------------------------------------------------
>
> Key: KAFKA-4730
> URL: https://issues.apache.org/jira/browse/KAFKA-4730
> Project: Kafka
> Issue Type: New Feature
> Components: streams
> Affects Versions: 0.10.2.0
> Reporter: Eno Thereska
> Assignee: Sophie Blee-Goldman
> Priority: Major
>
> Streams has windowed persistent stores (e.g., see PersistentKeyValueFactory
> interface with "windowed" method), however it does not allow for windowed
> in-memory stores (e.g., see InMemoryKeyValueFactory interface).
> In addition to the interface not allowing it, streams does not actually have
> an implementation of an in-memory windowed store.
> The implications are that operations that require windowing cannot use
> in-memory stores.
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