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https://issues.apache.org/jira/browse/SPARK-16738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16845594#comment-16845594
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Patrick McGloin commented on SPARK-16738:
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For what it's worth [~skonto] I think this would have been a useful addition.
If there was a JDBC connection to this you could connect the likes of Tableau
to it. I don't think you can do that with Kafka streams.
> Queryable state for Spark State Store
> -------------------------------------
>
> Key: SPARK-16738
> URL: https://issues.apache.org/jira/browse/SPARK-16738
> Project: Spark
> Issue Type: New Feature
> Components: Structured Streaming
> Affects Versions: 2.0.0
> Reporter: Mark Sumner
> Priority: Major
> Labels: bulk-closed, features
>
> Spark 2.0 will introduce the new State Store to allow state managment outside
> the RDD model (see: SPARK-13809)
> This proposal seeks to include a mechanism (in a future release) to expose
> this internal store to external applications for querying.
> This would then make it possible to interact with aggregated state without
> needing to synchronously write (and read) to/from an external store.
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