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https://issues.apache.org/jira/browse/FLINK-2924?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15009682#comment-15009682
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Robert Metzger commented on FLINK-2924:
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See PR: https://github.com/apache/flink/pull/1305
> Create database state backend
> -----------------------------
>
> Key: FLINK-2924
> URL: https://issues.apache.org/jira/browse/FLINK-2924
> Project: Flink
> Issue Type: Improvement
> Components: Streaming
> Reporter: Gyula Fora
> Assignee: Gyula Fora
>
> The goal is to create a database state backend that can be used with JDBC
> supporting databases.
> The backend should support the storage of non-partitioned states, and also
> the storage of Key-value states with high throughput. As databases provide
> advanced querying functionality the key-value state can be implemented to be
> lazily fetched and should scale to "arbitrary" state sizes by not storing the
> non-active key-values on heap.
> An adapter class will be provided that can help bridge the gap between
> different sql implementations.
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