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From Jesús Camacho Rodríguez (JIRA) <j...@apache.org>
Subject [jira] [Commented] (HIVE-8651) CBO: sort column changed in infer_bucket_sort test
Date Thu, 30 Oct 2014 01:55:34 GMT

    [ https://issues.apache.org/jira/browse/HIVE-8651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14189479#comment-14189479
] 

Jesús Camacho Rodríguez commented on HIVE-8651:
-----------------------------------------------

This is not a correctness issue; the order of the joins is changed by CBO and thus the bucket
columns change. But the plan is correct.

> CBO: sort column changed in infer_bucket_sort test
> --------------------------------------------------
>
>                 Key: HIVE-8651
>                 URL: https://issues.apache.org/jira/browse/HIVE-8651
>             Project: Hive
>          Issue Type: Sub-task
>          Components: CBO
>            Reporter: Sergey Shelukhin
>             Fix For: 0.15.0
>
>
> {noformat}
> -Bucket Columns:        [value]                  
> -Sort Columns:          [Order(col:value, order:1)]      
> +Bucket Columns:        [key]                    
> +Sort Columns:          [Order(col:key, order:1)]        
> {noformat}
> That is in the case for "Test join on three tables on different keys, should be bucketed
and sorted by latter key"; the sort changed to the first key instead



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