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https://issues.apache.org/jira/browse/BEAM-10303?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17211747#comment-17211747
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Beam JIRA Bot commented on BEAM-10303:
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This issue was marked "stale-assigned" and has not received a public comment in
7 days. It is now automatically unassigned. If you are still working on it, you
can assign it to yourself again. Please also give an update about the status of
the work.
> FnApiDoFnRunner window observing optimization
> ---------------------------------------------
>
> Key: BEAM-10303
> URL: https://issues.apache.org/jira/browse/BEAM-10303
> Project: Beam
> Issue Type: Improvement
> Components: sdk-java-harness
> Reporter: Luke Cwik
> Priority: P2
> Labels: portability
> Time Spent: 10.5h
> Remaining Estimate: 0h
>
> Currently the FnApiDoFnRunner processes each element within it's own window.
> There is an easy optimization where we process the element once if and only
> if the function doesn't observe the window (either directly or indirectly via
> side inputs/state/...).
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