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https://issues.apache.org/jira/browse/HIVE-7541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14091592#comment-14091592
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Szehon Ho commented on HIVE-7541:
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Hi Na Yang, left some comments on the rb
[https://reviews.apache.org/r/24522/|https://reviews.apache.org/r/24522/]
> Support union all on Spark
> --------------------------
>
> Key: HIVE-7541
> URL: https://issues.apache.org/jira/browse/HIVE-7541
> Project: Hive
> Issue Type: Sub-task
> Components: Spark
> Affects Versions: spark-branch
> Reporter: Xuefu Zhang
> Assignee: Na Yang
> Attachments: HIVE-7541.1-spark.patch, Hive on Spark Union All
> design.pdf
>
>
> For union all operator, we will use Spark's union transformation. Refer to
> the design doc on wiki for more information.
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