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Posted to jira@arrow.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2022/09/21 03:27:00 UTC
[jira] [Updated] (ARROW-17520) [C++] Implement SubStrait SetRel (UnionAll)
[ https://issues.apache.org/jira/browse/ARROW-17520?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ASF GitHub Bot updated ARROW-17520:
-----------------------------------
Labels: pull-request-available (was: )
> [C++] Implement SubStrait SetRel (UnionAll)
> -------------------------------------------
>
> Key: ARROW-17520
> URL: https://issues.apache.org/jira/browse/ARROW-17520
> Project: Apache Arrow
> Issue Type: New Feature
> Reporter: Donghe Kang
> Assignee: Vibhatha Lakmal Abeykoon
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The SetRel operator in Substrait is a critical operator to merge data from several branches in the query plan. The operator has a few options like MINUS, INTERSECTION and UNION. The UNIONALL option that directly merges data flows is the foundation of other options and is easier to implement. As I know, Acero already has the union operator and we could easily map the UNIONALL in Substrait to the Union operator in Acero.
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