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From "Carl Steinbach (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-3322) Split and deprecate hive.mapred.mode
Date Tue, 31 Jul 2012 00:21:33 GMT

    [ https://issues.apache.org/jira/browse/HIVE-3322?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13425414#comment-13425414
] 

Carl Steinbach commented on HIVE-3322:
--------------------------------------

The configuration property hive.mapred.mode currently controls the following behaviors:

{quote}
The mode in which the hive operations are being performed. 	
In strict mode, some risky queries are not allowed to run. They include:	

* Cartesian Product.	
* No partition being picked up for a query.	
* Comparing bigints and strings.	
* Comparing bigints and doubles.	
* Orderby without limit.	
* Buckets are not a multiple of each other in the tabled being joined, and the user asked
for bucketed mapjoin.
{quote}

Users should have the option of enabling/disabling strict mode individually for each of these
operation types. They should also have the option of a enabling a global strict mode that
controls all of these properties by setting hive.enable.global.strict.mode=true.

                
> Split and deprecate hive.mapred.mode
> ------------------------------------
>
>                 Key: HIVE-3322
>                 URL: https://issues.apache.org/jira/browse/HIVE-3322
>             Project: Hive
>          Issue Type: Bug
>          Components: Configuration, Query Processor
>            Reporter: Carl Steinbach
>


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