Kenneth Knowles created BEAM-3722:
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Summary: UNION should be implemented via flatten & distinct
Key: BEAM-3722
URL: https://issues.apache.org/jira/browse/BEAM-3722
Project: Beam
Issue Type: Improvement
Components: dsl-sql
Reporter: Kenneth Knowles
Assignee: Kenneth Knowles
Currently, UNION is implemented as a set operator via CoGroupByKey when a
flatten + distinct will suffice. This also will be compatible with more types
of triggers.
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