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https://issues.apache.org/jira/browse/HADOOP-13335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15362984#comment-15362984
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Allen Wittenauer edited comment on HADOOP-13335 at 7/5/16 6:42 PM:
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hadoop jar does not include any of the following yarn content that is normally
initialized during the yarn-config.sh bootstrap:
* anything defined in yarn-env.sh
* some YARN\_\*\_DIR
* some YARN\_\*\_OPT and YARN\_\*\_OPTS
* YARN\_\*\_CLASSPATH
If anything wants to talk to yarn in any way/shape/form and use hadoop's
bootstrap code, they really, really, really should be using yarn jar.
Otherwise there is a risk that some things may get mis-configured. We won't be
able to clean this up until 4.x. (3.x finally deprecates a lot of this
craziness from the project split back that happened in 0.22...)
was (Author: aw):
hadoop jar does not include any of the following yarn content that is normally
initialized during the yarn-config.sh bootstrap:
* anything defined in yarn-env.sh
* some YARN_*_DIR
* some YARN_*_OPT and YARN_*_OPTS
* YARN_*_CLASSPATH
If anything wants to talk to yarn in any way/shape/form and use hadoop's
bootstrap code, they really, really, really should be using yarn jar.
Otherwise there is a risk that some things may get mis-configured. We won't be
able to clean this up until 4.x. (3.x finally deprecates a lot of this
craziness from the project split back that happened in 0.22...)
> 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
>
> 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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