[jira] [Commented] (HIVE-626) Typecast bug in Join operator

["Lefty Leverenz (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15116917#comment-15116917 ] 

Lefty Leverenz commented on HIVE-626:
-------------------------------------

Doc note:  This added *hive.optimize.cp* (column pruner) to HiveConf.java and changed the default value of *hive.optimize.ppd* to true in 0.4.0 (see HIVE-279).

* [Configuration Properties -- hive.optimize.cp | https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.optimize.cp]
* [Configuration Properties -- hive.optimize.ppd | https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.optimize.ppd]

> Typecast bug in Join operator
> -----------------------------
>
>                 Key: HIVE-626
>                 URL: https://issues.apache.org/jira/browse/HIVE-626
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Zheng Shao
>            Assignee: He Yongqiang
>             Fix For: 0.4.0
>
>         Attachments: HIVE-626.1.showinfo.patch, HIVE-626.2.showinfo_disable_cp.patch, hive-626-2009-07-13-2.patch, hive-626-2009-07-13.patch
>
>
> There is a type cast error in Join operator. Produced by the following steps:
> {code}
> create table zshao_foo (foo_id int, foo_name string, foo_a string, foo_b string,
> foo_c string, foo_d string) row format delimited fields terminated by ','
> stored as textfile;
> create table zshao_bar (bar_id int, bar_0 int, foo_id int, bar_1 int, bar_name
> string, bar_a string, bar_b string, bar_c string, bar_d string) row format
> delimited fields terminated by ',' stored as textfile;
> create table zshao_count (bar_id int, n int) row format delimited fields
> terminated by ',' stored as textfile;
> Each table has a single row as follows:
> zshao_foo:
> 1,foo1,a,b,c,d
> zshao_bar:
> 10,0,1,1,bar10,a,b,c,d
> zshao_count:
> 10,2
> load data local inpath 'zshao_foo' overwrite into table zshao_foo;
> load data local inpath 'zshao_bar' overwrite into table zshao_bar;
> load data local inpath 'zshao_count' overwrite into table zshao_count;
> explain extended
> select zshao_foo.foo_name, zshao_bar.bar_name, n from zshao_foo join zshao_bar on zshao_foo.foo_id =
> zshao_bar.foo_id join zshao_count on zshao_count.bar_id = zshao_bar.bar_id;
> {code}
> The case is from David Lerman.



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