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Posted to github@beam.apache.org by GitBox <gi...@apache.org> on 2022/06/04 01:55:13 UTC

[GitHub] [beam] kennknowles opened a new issue, #19515: Merge multiple input to one BeamUnionRel

kennknowles opened a new issue, #19515:
URL: https://github.com/apache/beam/issues/19515

   BeamUnionRel assumes inputs are two and rejects more. So `a UNION b UNION c` will have to be created as UNION(a, UNION(b, c)) and have two shuffles. If BeamUnionRel can handle multiple shuffles, we will have only one shuffle
   
   Imported from Jira [BEAM-7049](https://issues.apache.org/jira/browse/BEAM-7049). Original Jira may contain additional context.
   Reported by: amaliujia.


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