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https://issues.apache.org/jira/browse/BEAM-3859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17132271#comment-17132271
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Beam JIRA Bot commented on BEAM-3859:
-------------------------------------
This issue is assigned but has not received an update in 30 days so it has been
labeled "stale-assigned". If you are still working on the issue, please give an
update and remove the label. If you are no longer working on the issue, please
unassign so someone else may work on it. In 7 days the issue will be
automatically unassigned.
> Add an override to read from an Unbounded Source via Impulse and ParDo
> ----------------------------------------------------------------------
>
> Key: BEAM-3859
> URL: https://issues.apache.org/jira/browse/BEAM-3859
> Project: Beam
> Issue Type: Bug
> Components: runner-core
> Reporter: Thomas Groh
> Assignee: Eugene Kirpichov
> Priority: P2
> Labels: stale-assigned
>
> This enables more movement towards BEAM-2421.
>
> The DoFn that implements an UnboundedRead will have to be performed by a
> Splittable DoFn, as otherwise a reader can (and likely will) produce
> unbounded output per split, and cannot properly hold watermarks.
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