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https://issues.apache.org/jira/browse/HIVE-19794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16505514#comment-16505514
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Prasanth Jayachandran commented on HIVE-19794:
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Few things changed in the .3 patch. Since we expect single file generated by
order by query, this patch generates single split for the entire file instead
of going to AM for split generation. [~jdere] could please review the new
changes?
> Disable removing order by from subquery in GenericUDTFGetSplits
> ---------------------------------------------------------------
>
> Key: HIVE-19794
> URL: https://issues.apache.org/jira/browse/HIVE-19794
> Project: Hive
> Issue Type: Bug
> Affects Versions: 3.1.0, 4.0.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
> Priority: Major
> Attachments: HIVE-19794.1.patch, HIVE-19794.2.patch,
> HIVE-19794.3.patch
>
>
> spark-llap always wraps query under a subquery, until that is removed from
> spark-llap
> hive compiler is going to remove inner order by in GenericUDTFGetSplits.
> disable that optimization until then.
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