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https://issues.apache.org/jira/browse/FLINK-10578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16653587#comment-16653587
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Kostas Kloudas commented on FLINK-10578:
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Thanks a lot [~wind_ljy]!

> Support writable state corresponding to queryable state
> -------------------------------------------------------
>
>                 Key: FLINK-10578
>                 URL: https://issues.apache.org/jira/browse/FLINK-10578
>             Project: Flink
>          Issue Type: New Feature
>          Components: Queryable State, State Backends, Checkpointing
>            Reporter: Jiayi Liao
>            Assignee: Jiayi Liao
>            Priority: Major
>
> I can see that now we support queryable state, why don't we also support the 
> writable state? I've already done this on our own business to initialize the 
> state in window during the program's first run. I think other companies may 
> have other needs to modify the state from outside the job.
> The synchronization is a problem but from my perspective, very few objects 
> will be affected because we can directly operate on the stateTable(for the 
> FsStateBackend), and about the performance, I think it'll be okay if users 
> know about it.
> I'm not very aware of what will be affected except what I said above, please 
> let me know more if anyone has doubt about this.



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