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https://issues.apache.org/jira/browse/BEAM-12690?focusedWorklogId=634150&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-634150
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ASF GitHub Bot logged work on BEAM-12690:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 05/Aug/21 11:19
Start Date: 05/Aug/21 11:19
Worklog Time Spent: 10m
Work Description: reuvenlax commented on pull request #15249:
URL: https://github.com/apache/beam/pull/15249#issuecomment-893133895
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Issue Time Tracking
-------------------
Worklog Id: (was: 634150)
Time Spent: 1h 10m (was: 1h)
> GroupIntoBatches does not properly maintain watermarks
> ------------------------------------------------------
>
> Key: BEAM-12690
> URL: https://issues.apache.org/jira/browse/BEAM-12690
> Project: Beam
> Issue Type: Improvement
> Components: sdk-java-core
> Reporter: Reuven Lax
> Priority: P2
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> Since GIB buffers elements, the watermark should be held up to the minimum
> event-time buffered. Timer.withOutputTimestamp is the correct way to do this
> in Beam.
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