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Posted to issues@beam.apache.org by "sridhar Reddy (Jira)" <ji...@apache.org> on 2019/09/03 16:22:00 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=16921535#comment-16921535 ]
sridhar Reddy edited comment on BEAM-7049 at 9/3/19 4:21 PM:
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Hope you had a nice vacation! I will be on vacation myself from 09/04-09/11 F.Y.I. You can give it a lower priority for the time being
was (Author: sridharg):
Hope you had a nice vacation! I will be on vacation myself from 09/04-09/11 F.Y.I. You can prioritize this Jira accordingly.
> 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: 20m
> 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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