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From "Gopal V (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-13190) Vectorization: Dummy table row-limits get multiplied 100x accidentally
Date Tue, 01 Mar 2016 19:05:18 GMT

     [ https://issues.apache.org/jira/browse/HIVE-13190?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gopal V updated HIVE-13190:
---------------------------
    Description: 
100x more rows are produced from dummy tables.

{code}
hive> select count(1) from (select * from (Select 1 a) x order by x.a) y;
100
Time taken: 0.913 seconds, Fetched: 1 row(s)
hive> 
{code}

simpler example.

{code}
hive> create temporary table dual as select 1;
Table default.dual stats: [numFiles=1, numRows=100, totalSize=200, rawDataSize=100]
OK
Time taken: 1.482 seconds
{code}


  was:
100x more rows are produced from dummy tables.

{code}
hive> select count(1) from (select * from (Select 1 a) x order by x.a) y;
100
Time taken: 0.913 seconds, Fetched: 1 row(s)
hive> 
{code}




> Vectorization: Dummy table row-limits get multiplied 100x accidentally
> ----------------------------------------------------------------------
>
>                 Key: HIVE-13190
>                 URL: https://issues.apache.org/jira/browse/HIVE-13190
>             Project: Hive
>          Issue Type: Bug
>          Components: Vectorization
>    Affects Versions: 2.1.0
>            Reporter: Gopal V
>            Assignee: Matt McCline
>
> 100x more rows are produced from dummy tables.
> {code}
> hive> select count(1) from (select * from (Select 1 a) x order by x.a) y;
> 100
> Time taken: 0.913 seconds, Fetched: 1 row(s)
> hive> 
> {code}
> simpler example.
> {code}
> hive> create temporary table dual as select 1;
> Table default.dual stats: [numFiles=1, numRows=100, totalSize=200, rawDataSize=100]
> OK
> Time taken: 1.482 seconds
> {code}



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