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https://issues.apache.org/jira/browse/BEAM-1588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17546251#comment-17546251
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Kenneth Knowles commented on BEAM-1588:
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This issue has been migrated to https://github.com/apache/beam/issues/18133

> Reuse StateNamespace.stringKey in Flink States
> ----------------------------------------------
>
>                 Key: BEAM-1588
>                 URL: https://issues.apache.org/jira/browse/BEAM-1588
>             Project: Beam
>          Issue Type: Improvement
>          Components: runner-flink
>            Reporter: Jingsong Lee
>            Priority: P3
>
> See BEAM-1587
> StateNamespace.stringKey did two things: the base64 encoding of window , and 
> then String.format. These two things consumption is not small. We can cache 
> it in State and reuse.
> Further more, we can cache the state.



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