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https://issues.apache.org/jira/browse/BEAM-25?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15855665#comment-15855665
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Jingsong Lee commented on BEAM-25:
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[~kenn] Thanks for reply. But I need scan all elements in BagState every time 
if I use BagState to deduplication. Has Beam a plan to support SetState?

> Add user-ready API for interacting with state
> ---------------------------------------------
>
>                 Key: BEAM-25
>                 URL: https://issues.apache.org/jira/browse/BEAM-25
>             Project: Beam
>          Issue Type: New Feature
>          Components: sdk-java-core
>            Reporter: Kenneth Knowles
>            Assignee: Kenneth Knowles
>              Labels: State
>
> Our current state API is targeted at runner implementers, not pipeline 
> authors. As such it has many capabilities that are not necessary nor 
> desirable for simple use cases of stateful ParDo (such as dynamic state tag 
> creation). Implement a simple state intended for user access.
> (Details of our current thoughts in forthcoming design doc)



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