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https://issues.apache.org/jira/browse/HADOOP-13335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15363150#comment-15363150
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Allen Wittenauer commented on HADOOP-13335:
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bq. If I'm not mistaken yarn-config.sh imports hadoop-config.sh - so parameters 
like HADOOP_USER_CLASSPATH_FIRST etc will be respected. YARN_CLASSPATH_FIRST is 
handled after building the hadoop classpath.

But hive doesn't call yarn, it uses hadoop. hadoop does not import 
yarn-config.sh, which is where yarn configuration parameters are expected to be 
located. YARN\_USER\_CLASSPATH is not handled or likely defined *at all*.  So 
none of those settings will be defined.

> Add an option to suppress the 'use yarn jar' warning or remove it
> -----------------------------------------------------------------
>
>                 Key: HADOOP-13335
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13335
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 2.7.0
>            Reporter: Siddharth Seth
>         Attachments: HADOOP-13335.01.patch
>
>
> https://issues.apache.org/jira/browse/HADOOP-11257 added a 'deprecation' 
> warning for 'hadoop jar'.
> hadoop jar is used for a lot more that starting jobs. As an example - hive 
> uses it to start all it's services (HiveServer2, the hive client, beeline 
> etc).
> Using 'yarn jar' for to start these services / tools doesn't make a lot of 
> sense - there's no relation to yarn other than requiring the classpath to 
> include yarn libraries.
> I'd propose reverting the changes where this message is printed if YARN 
> variables are set (leave it in the help message), or adding a mechanism which 
> would allow users to suppress this WARNING.



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