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From "Pengcheng Xiong (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-9217) UnionProcessor misses results for multi-insert when hive.optimize.union.remove=true
Date Wed, 31 Dec 2014 02:21:13 GMT

     [ https://issues.apache.org/jira/browse/HIVE-9217?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Pengcheng Xiong updated HIVE-9217:
----------------------------------
    Attachment: HIVE-9217.02.patch

add a function to count different FS following [~jpullokkaran]'s comments.

> UnionProcessor misses results for multi-insert when hive.optimize.union.remove=true
> -----------------------------------------------------------------------------------
>
>                 Key: HIVE-9217
>                 URL: https://issues.apache.org/jira/browse/HIVE-9217
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Pengcheng Xiong
>            Assignee: Pengcheng Xiong
>         Attachments: HIVE-9217.01.patch, HIVE-9217.02.patch
>
>
> To reproduce:
> In union_remove_6.q, just change 
> FROM (
>   SELECT key, count(1) as values from inputTbl1 group by key
>   UNION ALL
>   SELECT key, count(1) as values from inputTbl1 group by key
> ) a
> insert overwrite table outputTbl1 select *
> insert overwrite table outputTbl2 select *;
> to 
> FROM (
>   select * from(
>   SELECT key, count(1) as values from inputTbl1 group by key
>   UNION ALL
>   SELECT key, count(1) as values from inputTbl1 group by key
>   )subq
> ) a
> insert overwrite table outputTbl1 select *
> insert overwrite table outputTbl2 select *;
> select * from outputtbl2 will output nothing



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