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https://issues.apache.org/jira/browse/BEAM-260?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Groh resolved BEAM-260.
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Resolution: Fixed
Fix Version/s: First stable release
> WindowMappingFn: Know the getSideInputWindow upper bound to release side
> input resources
> ----------------------------------------------------------------------------------------
>
> Key: BEAM-260
> URL: https://issues.apache.org/jira/browse/BEAM-260
> Project: Beam
> Issue Type: Bug
> Components: beam-model-fn-api, beam-model-runner-api
> Reporter: Mark Shields
> Assignee: Thomas Groh
> Fix For: First stable release
>
>
> We currently have no static knowledge about the getSideInputWindow function,
> and runners are thus forced to hold on to all side input state / elements in
> case a future element reaches back into an earlier side input element.
> Maybe we need an upper bound on lag from current to result of
> getSideInputWindow so we can have a progressing gc horizon as we do for GKB
> window state.
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