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From "Daniel Halperin (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (BEAM-53) PubSubIO: reimplement in Java
Date Fri, 18 Mar 2016 15:43:33 GMT

     [ https://issues.apache.org/jira/browse/BEAM-53?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Daniel Halperin updated BEAM-53:
--------------------------------
    Assignee: Mark Shields

> PubSubIO: reimplement in Java
> -----------------------------
>
>                 Key: BEAM-53
>                 URL: https://issues.apache.org/jira/browse/BEAM-53
>             Project: Beam
>          Issue Type: New Feature
>          Components: sdk-java-gcp
>            Reporter: Daniel Halperin
>            Assignee: Mark Shields
>            Priority: Minor
>
> PubSubIO is currently only partially implemented in Java: the DirectPipelineRunner uses
a non-scalable API in a single-threaded manner.
> In contrast, the DataflowPipelineRunner uses an entirely different code path implemented
in the Google Cloud Dataflow service.
> We need to reimplement PubSubIO in Java in order to support other runners in a scalable
way.
> Additionally, we can take this opportunity to add new features:
> * getting timestamp from an arbitrary lambda in arbitrary formats rather than from a
message attribute in only 2 formats.
> * exposing metadata and attributes in the elements produced by PubSubIO.Read
> * setting metadata and attributes in the messages written by PubSubIO.Write



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