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https://issues.apache.org/jira/browse/BEAM-880?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Amit Sela resolved BEAM-880.
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Resolution: Not A Bug
Fix Version/s: Not applicable
PAssert is designed to to create empty iterables to enforce assertion in DoFn
by design.
> Avoid emitting default empty iterable in PAssert.GroupedGlobally.
> -----------------------------------------------------------------
>
> Key: BEAM-880
> URL: https://issues.apache.org/jira/browse/BEAM-880
> Project: Beam
> Issue Type: Bug
> Components: sdk-java-core
> Reporter: Amit Sela
> Assignee: Amit Sela
> Fix For: Not applicable
>
>
> Filter to remove the default dummy so that an empty PCollection is actually
> empty and doesn't contain a single-element empty iterable.
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