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From "Edward Capriolo (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-4470) HS2 should disable local query execution
Date Fri, 26 Jul 2013 19:33:48 GMT

    [ https://issues.apache.org/jira/browse/HIVE-4470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13721117#comment-13721117
] 

Edward Capriolo commented on HIVE-4470:
---------------------------------------

Adding an option is nice, but I do not see how it is enforceable since HiveConf can be changed
by the user.
                
> HS2 should disable local query execution
> ----------------------------------------
>
>                 Key: HIVE-4470
>                 URL: https://issues.apache.org/jira/browse/HIVE-4470
>             Project: Hive
>          Issue Type: Bug
>          Components: HiveServer2
>            Reporter: Thejas M Nair
>
> Hive can run queries in local mode (instead of using a cluster), if the size is small.
This happens when "hive.exec.mode.local.auto" is set to true.
> This would affect the stability of the hive server2 node, if you have heavy query processing
happening on it. Bugs in udfs triggered by a bad record can potentially add very heavy load
making the server inaccessible. 
> By default, HS2 should set these parameters to disallow local execution or send and error
message if user tries to set these.

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