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https://issues.apache.org/jira/browse/BEAM-575?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Scott Wegner closed BEAM-575.
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Resolution: Fixed
Fix Version/s: 0.3.0-incubating
> "Latest String" Aggregator
> --------------------------
>
> Key: BEAM-575
> URL: https://issues.apache.org/jira/browse/BEAM-575
> Project: Beam
> Issue Type: New Feature
> Components: sdk-java-core
> Reporter: Scott Wegner
> Assignee: Scott Wegner
> Fix For: 0.3.0-incubating
>
>
> Beam SDK recently gained support for "display data", which is
> construction-time metadata about a pipeline. Display data is limited in that
> it doesn't provide a way to publish runtime metadata.
> Aggregators are the current method for pipelines to publish runtime metadata,
> but currently focuses on counter-type metadata. It would be valuable to
> expand the support for dynamically-computed properties like "pub-sub
> subscription id" or "sink export job status". This would fit nicely into the
> aggregators API by providing a "Latest" combiner with String-typed data.
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