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https://issues.apache.org/jira/browse/BEAM-6116?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maximilian Michels closed BEAM-6116.
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Resolution: Fixed
Thanks for fixing this and adding a test. Backported to release-2.9.0.
> Pushed back watermark never emitted in portable Flink runner
> ------------------------------------------------------------
>
> Key: BEAM-6116
> URL: https://issues.apache.org/jira/browse/BEAM-6116
> Project: Beam
> Issue Type: Bug
> Components: runner-flink
> Affects Versions: 2.9.0
> Reporter: Thomas Weise
> Assignee: Thomas Weise
> Priority: Critical
> Labels: portability-flink
> Fix For: 2.9.0
>
> Time Spent: 2h 10m
> Remaining Estimate: 0h
>
> The portable runner pushes back the watermark while the bundle processes in
> the SDK worker. After the bundle is complete, that watermark needs to be
> emitted. That never happens, because ExecutableStageDoFnOperator does not
> clear the hold.
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