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Posted to commits@beam.apache.org by "Scott Wegner (JIRA)" <ji...@apache.org> on 2016/09/29 21:53:21 UTC

[jira] [Closed] (BEAM-575) "Latest String" Aggregator

     [ https://issues.apache.org/jira/browse/BEAM-575?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Scott Wegner closed BEAM-575.
-----------------------------
       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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