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https://issues.apache.org/jira/browse/BEAM-9640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17278438#comment-17278438
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Pablo Estrada commented on BEAM-9640:
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The `ref_PCollection_PCollection_8_truncate_restriction` is an internal
PCollection to the stage, and it should not be used as part of these updates.
There was a bug in the watermark update code that was erroneously trying to add
a watermark for this PCollection. This bug is addressed in this commit
(https://github.com/apache/beam/pull/11296/commits/f6950581e458253626c6dc4226d526cbd453db6b)
> Track PCollection watermark across bundle executions
> ----------------------------------------------------
>
> Key: BEAM-9640
> URL: https://issues.apache.org/jira/browse/BEAM-9640
> Project: Beam
> Issue Type: Sub-task
> Components: sdk-py-core
> Reporter: Pablo Estrada
> Priority: P3
> Attachments: graph.png
>
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> This can be done without relying on the watermark manager for execution.
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