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https://issues.apache.org/jira/browse/BEAM-10400?focusedWorklogId=453646&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-453646
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ASF GitHub Bot logged work on BEAM-10400:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 01/Jul/20 20:34
Start Date: 01/Jul/20 20:34
Worklog Time Spent: 10m
Work Description: je-ik commented on pull request #12155:
URL: https://github.com/apache/beam/pull/12155#issuecomment-652632861
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Issue Time Tracking
-------------------
Worklog Id: (was: 453646)
Time Spent: 1h 10m (was: 1h)
> 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: 1h 10m
> 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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