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From "Nemon Lou (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-13602) TPCH q16 return wrong result when CBO is on
Date Tue, 26 Apr 2016 01:34:13 GMT

    [ https://issues.apache.org/jira/browse/HIVE-13602?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15257398#comment-15257398
] 

Nemon Lou commented on HIVE-13602:
----------------------------------

It's 24581 on my computer. I must have checked the wrong stages from mapreduce job UI.
After set hive.optimize.constant.propagation=false;
the result is right:
INFO  : Table tpch_flat_orc_2.q16_cbo_debug2 stats: [numFiles=1, numRows=24581, totalSize=803640,
rawDataSize=786232]


> 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: 1.3.0, 2.0.0, 1.2.2
>            Reporter: Nemon Lou
>            Assignee: Pengcheng Xiong
>         Attachments: calcite_cbo_bad.out, calcite_cbo_good.out, explain_cbo_bad_part1.out,
explain_cbo_bad_part2.out, explain_cbo_bad_part3.out, explain_cbo_good(rewrite)_part1.out,
explain_cbo_good(rewrite)_part2.out, explain_cbo_good(rewrite)_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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