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https://issues.apache.org/jira/browse/HIVE-17119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16092235#comment-16092235
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Pengcheng Xiong commented on HIVE-17119:
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Thanks [~vgarg], i think previously [~rusanu] has a patch for popping out
warning messages for missing stats.
> Improve error message thrown by subqueries if there are no statistics
> ---------------------------------------------------------------------
>
> Key: HIVE-17119
> URL: https://issues.apache.org/jira/browse/HIVE-17119
> Project: Hive
> Issue Type: Improvement
> Components: Logical Optimizer
> Reporter: Vineet Garg
> Assignee: Vineet Garg
>
> Currently if there are no stats hive bails out of cbo and try non-cbo route.
> Since most of the subqueries are only supported in CBO and not in non-cbo we
> end up with completely different error message. This creates confusion.
> One possible solution is to throw warnings that stats are missing before
> throwing subquery related error message.
> cc [~pxiong]
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