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From "Xu Mingmin (JIRA)" <>
Subject [jira] [Created] (BEAM-1806) a new option `asLeftOuterJoin` for CoGroupByKey
Date Fri, 24 Mar 2017 22:38:41 GMT
Xu Mingmin created BEAM-1806:

             Summary: a new option `asLeftOuterJoin` for CoGroupByKey
                 Key: BEAM-1806
             Project: Beam
          Issue Type: Improvement
          Components: sdk-java-core
            Reporter: Xu Mingmin
            Assignee: Xu Mingmin

Similar as BEAM-1805, restrict it as left-outer-join. 

The first {{PCollection}} is used as the key, if it's empty, output is ignored.

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