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Posted to commits@beam.apache.org by "Vaclav Plajt (JIRA)" <ji...@apache.org> on 2018/09/07 11:44:00 UTC

[jira] [Closed] (BEAM-5306) Joins should support more than one output element from user joining UDF

     [ https://issues.apache.org/jira/browse/BEAM-5306?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vaclav Plajt closed BEAM-5306.
------------------------------
       Resolution: Fixed
    Fix Version/s: Not applicable

> Joins should support more than one output element from user joining UDF 
> ------------------------------------------------------------------------
>
>                 Key: BEAM-5306
>                 URL: https://issues.apache.org/jira/browse/BEAM-5306
>             Project: Beam
>          Issue Type: Sub-task
>          Components: dsl-euphoria
>            Reporter: Vaclav Plajt
>            Assignee: Vaclav Plajt
>            Priority: Major
>             Fix For: Not applicable
>
>
> Output elements from joining user-defined functions are collected using `SingleValueCollector`, so only one output value is supported. That is wrong limitation. Refactor 'DoFnCollector' to be universally usable to collect many elements with custom adaptation.



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