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https://issues.apache.org/jira/browse/FLINK-3947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15939965#comment-15939965
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Aljoscha Krettek commented on FLINK-3947:
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Can we close this now that FLINK-4856 is in?
> Provide low level access to RocksDB state backend
> -------------------------------------------------
>
> Key: FLINK-3947
> URL: https://issues.apache.org/jira/browse/FLINK-3947
> Project: Flink
> Issue Type: Improvement
> Components: State Backends, Checkpointing
> Affects Versions: 1.0.3
> Reporter: Elias Levy
>
> The current state API is limiting and some implementations are not as
> efficient as they could be, particularly when working with large states. For
> instance, a ListState is append only. You cannot remove values from the
> list. And the RocksDBListState get() implementation reads all list values
> from RocksDB instead of returning an Iterable that only reads values as
> needed.
> Furthermore, RocksDB is an ordered KV store, yet there is no ordered map
> state API with an ability to iterate over the stored values in order.
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