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From "Vaclav Plajt (JIRA)" <j...@apache.org>
Subject [jira] [Created] (BEAM-5306) Joins should support more than one output from user joining UDF
Date Wed, 05 Sep 2018 08:31:00 GMT
Vaclav Plajt created BEAM-5306:
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             Summary: Joins should support more than one output 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


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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