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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-3403) user should not specify mapjoin to perform sort-merge bucketed join
Date Tue, 12 Feb 2013 18:43:13 GMT

    [ https://issues.apache.org/jira/browse/HIVE-3403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13576873#comment-13576873
] 

Ashutosh Chauhan commented on HIVE-3403:
----------------------------------------

Make sense. I am not suggesting to include all that in this jira, but wanted to make sure
we are on same page as to where are heading.
Though, w.r.t, configs I can see your point about adding more configs, but I still think by
default optimization configs should be on. Whole point of release is to ship stable codebase.
By definition trunk is not considered stable (as stable as in making release out of it), so
time we get between committing to trunk and releasing is for stablizing new codebase, but
if by default configs are off, bugs lurking in new codebase will never be exposed.  
                
> user should not specify mapjoin to perform sort-merge bucketed join
> -------------------------------------------------------------------
>
>                 Key: HIVE-3403
>                 URL: https://issues.apache.org/jira/browse/HIVE-3403
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Namit Jain
>            Assignee: Namit Jain
>         Attachments: hive.3403.10.patch, hive.3403.11.patch, hive.3403.12.patch, hive.3403.13.patch,
hive.3403.14.patch, hive.3403.15.patch, hive.3403.16.patch, hive.3403.17.patch, hive.3403.18.patch,
hive.3403.19.patch, hive.3403.1.patch, hive.3403.21.patch, hive.3403.22.patch, hive.3403.23.patch,
hive.3403.24.patch, hive.3403.25.patch, hive.3403.26.patch, hive.3403.2.patch, hive.3403.3.patch,
hive.3403.4.patch, hive.3403.5.patch, hive.3403.6.patch, hive.3403.7.patch, hive.3403.8.patch,
hive.3403.9.patch
>
>
> Currently, in order to perform a sort merge bucketed join, the user needs
> to set hive.optimize.bucketmapjoin.sortedmerge to true, and also specify the 
> mapjoin hint.
> The user should not specify any hints.

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