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https://issues.apache.org/jira/browse/BEAM-10420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Luke Cwik resolved BEAM-10420.
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Fix Version/s: 2.24.0
Resolution: Fixed
> PerWindowInvoker to handle window observing SplittableDoFns
> -----------------------------------------------------------
>
> Key: BEAM-10420
> URL: https://issues.apache.org/jira/browse/BEAM-10420
> Project: Beam
> Issue Type: Improvement
> Components: sdk-py-harness
> Reporter: Luke Cwik
> Assignee: Luke Cwik
> Priority: P2
> Labels: portability
> Fix For: 2.24.0
>
> Time Spent: 9h 40m
> 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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