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https://issues.apache.org/jira/browse/HIVE-12346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14995110#comment-14995110
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Lefty Leverenz commented on HIVE-12346:
---------------------------------------

Doc note:  This adds *hive.conf.internal.variable.list* to HiveConf.java, so it 
needs to be documented in the wiki.  Perhaps it belongs in the section 
currently called Restricted/Hidden List and Whitelist.

* [Configuration Properties -- Restricted/Hidden List and Whitelist | 
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-Restricted/HiddenListandWhitelist]

The wiki does not document three configs in the default value 
(*hive.added.files.path*, *hive.added.jars.path*, and 
*hive.added.archives.path*) so they don't need to be updated.

> Internally used variables in HiveConf should not be settable via command
> ------------------------------------------------------------------------
>
>                 Key: HIVE-12346
>                 URL: https://issues.apache.org/jira/browse/HIVE-12346
>             Project: Hive
>          Issue Type: Bug
>          Components: Configuration
>    Affects Versions: 1.2.1
>            Reporter: Chaoyu Tang
>            Assignee: Chaoyu Tang
>              Labels: TODOC1.3
>             Fix For: 1.3.0, 2.0.0
>
>         Attachments: HIVE-12346.1.patch, HIVE-12346.patch
>
>
> Some HiveConf variables such as hive.added.jars.path are only for internal 
> use and should not be settable via set command. 
> We saw a lot of cases that users mistakenly set these variables using set 
> command despite some of them have been documented as "internal parameter" in 
> Hive. The command usually succeeds but it sometimes does not effect, which 
> causes some confusions. For example, the hive.added.jars.path can be set via 
> set command but it is sometimes overridden by session resource jars during 
> runtime.



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