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Posted to issues@beam.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2019/11/12 21:25:00 UTC
[jira] [Work logged] (BEAM-7049) Merge multiple input to one
BeamUnionRel
[ https://issues.apache.org/jira/browse/BEAM-7049?focusedWorklogId=342170&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-342170 ]
ASF GitHub Bot logged work on BEAM-7049:
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Author: ASF GitHub Bot
Created on: 12/Nov/19 21:24
Start Date: 12/Nov/19 21:24
Worklog Time Spent: 10m
Work Description: stale[bot] commented on issue #9358: (WIP-BEAM-7049)Changes made to make a simple case of threeway union work
URL: https://github.com/apache/beam/pull/9358#issuecomment-553121577
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Issue Time Tracking
-------------------
Worklog Id: (was: 342170)
Time Spent: 1h 10m (was: 1h)
> 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 10m
> 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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