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https://issues.apache.org/jira/browse/BEAM-210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pei He closed BEAM-210.
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Resolution: Fixed
> Allow control of empty ON_TIME panes analogous to final panes
> -------------------------------------------------------------
>
> Key: BEAM-210
> URL: https://issues.apache.org/jira/browse/BEAM-210
> Project: Beam
> Issue Type: New Feature
> Components: beam-model-runner-api, sdk-java-core
> Reporter: Mark Shields
> Assignee: Pei He
> Fix For: 2.1.0
>
>
> Today, ON_TIME panes are emitted whether or not they are empty. We had
> decided that for final panes the user would want to control this behavior, to
> control data volume. But for ON_TIME panes no such control exists. The
> rationale is perhaps that the ON_TIME pane is a fundamental result that
> should not be elided. To be considered: whether this is what we want.
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