[jira] [Resolved] (FLINK-3798) Clean up RocksDB state backend access modifiers

["Gyula Fora (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-3798?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gyula Fora resolved FLINK-3798.
-------------------------------
    Resolution: Fixed

> Clean up RocksDB state backend access modifiers
> -----------------------------------------------
>
>                 Key: FLINK-3798
>                 URL: https://issues.apache.org/jira/browse/FLINK-3798
>             Project: Flink
>          Issue Type: Improvement
>          Components: Streaming Connectors
>            Reporter: Gyula Fora
>            Assignee: Gyula Fora
>            Priority: Minor
>
> The RocksDB state backend uses a lot package private methods and fields which makes it very hard to subclass the different parts for added functionality. I think these should be protected instead. 
> Also the AbstractRocksDBState declares some methods final when there are use-cases when a subclass migh want to call them.
> Just to give you an example I am creating a version of the value state which would keep a small cache on heap. For this it would be enough to subclass the RockDBStateBackend and RocksDBVAlue state classes if the above mentioned changes were made. Now I have to use reflection to access package private fields and actually copy classes due to final methods.



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