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https://issues.apache.org/jira/browse/BEAM-652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17145641#comment-17145641
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Beam JIRA Bot commented on BEAM-652:
------------------------------------
This issue was marked "stale-P2" and has not received a public comment in 14
days. It is now automatically moved to P3. If you are still affected by it, you
can comment and move it back to P2.
> StateNamespaces.window() potentially unstable / stable encodings for windows
> ----------------------------------------------------------------------------
>
> Key: BEAM-652
> URL: https://issues.apache.org/jira/browse/BEAM-652
> Project: Beam
> Issue Type: Improvement
> Components: sdk-java-core
> Reporter: Kenneth Knowles
> Priority: P3
>
> WindowNamespace#stringKey includes a base64 encoding of the window as encoded
> by the windowCoder. This makes the key unpredictable if we support features
> such as reloading a pipeline with a new SDK or bugfixed pipeline. The
> encoding should be stable and documented.
> And even if the SDK's window types are stable and documented, users can
> define their own windows with coders and these may be less stable / requiring
> bugfixes. This ticket is to track the issue and any new ideas.
> [1]
> https://github.com/apache/incubator-beam/blob/master/sdks/java/core/src/main/java/org/apache/beam/sdk/util/state/StateNamespaces.java#L113
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