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https://issues.apache.org/jira/browse/HIVE-13602?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15255921#comment-15255921
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Pengcheng Xiong commented on HIVE-13602:
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[~nemon], could u also post the explain plan for the rewrite query? As I can
see from the attachement, the original plan when CBO is on is to
{code}
(join part with supplier cnt=0) join (left outer join partsupp with supplier).
{code}
I would like to see if the rewrite query follows the same plan.
> TPCH q16 return wrong result when CBO is on
> -------------------------------------------
>
> Key: HIVE-13602
> URL: https://issues.apache.org/jira/browse/HIVE-13602
> Project: Hive
> Issue Type: Bug
> Components: CBO, Logical Optimizer
> Affects Versions: 1.2.1
> Reporter: Nemon Lou
> Assignee: Pengcheng Xiong
> Attachments: explain_cbo_bad_part1.out, explain_cbo_bad_part2.out,
> explain_cbo_bad_part3.out
>
>
> Running tpch with factor 2,
> q16 returns 1,160 rows when CBO is on,
> while returns 59,616 rows when CBO is off.
> See attachment for detail .
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