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https://issues.apache.org/jira/browse/BEAM-10400?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jan Lukavský updated BEAM-10400:
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Description: When watermark is updated in upstream PTransform, it is
*instantly* propagated as input watermark to all directly connected downstream
PTransforms. We must ensure that all output bundles that were emitted before
the watermark update are processed before we allow updating input watermark of
downstream PTransform.
> DirectRunner: race condition in watermark update
> ------------------------------------------------
>
> Key: BEAM-10400
> URL: https://issues.apache.org/jira/browse/BEAM-10400
> Project: Beam
> Issue Type: Bug
> Components: runner-direct
> Affects Versions: 2.23.0
> Reporter: Jan Lukavský
> Assignee: Jan Lukavský
> Priority: P2
> Time Spent: 50m
> Remaining Estimate: 0h
>
> When watermark is updated in upstream PTransform, it is *instantly*
> propagated as input watermark to all directly connected downstream
> PTransforms. We must ensure that all output bundles that were emitted before
> the watermark update are processed before we allow updating input watermark
> of downstream PTransform.
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