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Posted to issues@beam.apache.org by "sridhar Reddy (Jira)" <ji...@apache.org> on 2019/10/03 00:08:00 UTC

[jira] [Comment Edited] (BEAM-7049) Merge multiple input to one BeamUnionRel

    [ https://issues.apache.org/jira/browse/BEAM-7049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16943253#comment-16943253 ] 

sridhar Reddy edited comment on BEAM-7049 at 10/3/19 12:07 AM:
---------------------------------------------------------------

Sounds good. Take your time. I appreciate you helping people on the Outreachy program besides me.  You are a great apache beam community member!


was (Author: sridharg):
Sounds good. Take your time. I appreciate you helping people on the Outreachy program besides me.  

> Merge multiple input to one BeamUnionRel
> ----------------------------------------
>
>                 Key: BEAM-7049
>                 URL: https://issues.apache.org/jira/browse/BEAM-7049
>             Project: Beam
>          Issue Type: Improvement
>          Components: dsl-sql
>            Reporter: Rui Wang
>            Assignee: sridhar Reddy
>            Priority: Major
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> 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



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