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From "Ashutosh Chauhan (JIRA)" <>
Subject [jira] [Commented] (HIVE-4042) ignore mapjoin hint
Date Sat, 23 Feb 2013 19:08:12 GMT


Ashutosh Chauhan commented on HIVE-4042:

Whats the point of adding *yet another config and defaulting it to false* ? As I see this,
whole point of this patch is not to fail the production query when it has hints. With default
value being false, queries will still fail. I don't see any merit of this config at all. Why
cant we *always* ignore map-join hint?
For the case Kevin brought up you have already added logging and relies on user to rewrite
their query using that logging info. 
> ignore mapjoin hint
> -------------------
>                 Key: HIVE-4042
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Namit Jain
>            Assignee: Namit Jain
>         Attachments: hive.4042.1.patch, hive.4042.2.patch, hive.4042.3.patch
> After HIVE-3784, in a production environment, it can become difficult to
> deploy since a lot of production queries can break.

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