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https://issues.apache.org/jira/browse/SAMZA-1567?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xinyu Liu updated SAMZA-1567:
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Description: Current watermark logic calculates the watermark based on the
watermark from all the upstream operators. BEAM has a very special use case
that requires excluding certain streams from this calcuation (view streams),
and the watermark from these streams should be directly passed down to the
WatermarkFunction. (was: Current watermark logic calculates the watermark
based on the watermark all the upstream operators. BEAM has a very special use
case that requires excluding certain streams from this calcuation (view
streams), and the watermark from these streams should be directly passed down
to the WatermarkFunction.)
> Allow user WatermarkFunction to exclude streams from Watermark computation
> --------------------------------------------------------------------------
>
> Key: SAMZA-1567
> URL: https://issues.apache.org/jira/browse/SAMZA-1567
> Project: Samza
> Issue Type: Bug
> Affects Versions: 0.15.0
> Reporter: Xinyu Liu
> Assignee: Xinyu Liu
> Priority: Major
> Fix For: 0.15.0
>
>
> Current watermark logic calculates the watermark based on the watermark from
> all the upstream operators. BEAM has a very special use case that requires
> excluding certain streams from this calcuation (view streams), and the
> watermark from these streams should be directly passed down to the
> WatermarkFunction.
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