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https://issues.apache.org/jira/browse/HIVE-7844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14110143#comment-14110143
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Venki Korukanti commented on HIVE-7844:
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Created HIVE-7878. I thought of changing the TestCliDriver.vm to generate
TestSparkCliDriver.runTest code which checks if the query file has "UNION ALL",
if it is then create a query string by appending original q file and "--
SORT__BEFORE_DIFF", but it looks like we have already modified most of the q
files that have "UNION ALL".
> optimize_nullscan.q fails due to differences in explain plan [Spark Branch]
> ---------------------------------------------------------------------------
>
> Key: HIVE-7844
> URL: https://issues.apache.org/jira/browse/HIVE-7844
> Project: Hive
> Issue Type: Sub-task
> Components: Spark
> Affects Versions: spark-branch
> Reporter: Venki Korukanti
> Assignee: Venki Korukanti
> Labels: Spark-M1
> Fix For: spark-branch
>
> Attachments: HIVE-7844.1-spark.patch, HIVE-7844.2-spark.patch
>
>
> Looks like on spark branch, we are not optimizing query plans for limit 0
> cases.
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