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From "Robert Joseph Evans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9426) Hadoop should expose Jar location utilities on its public API
Date Tue, 02 Apr 2013 14:51:15 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13619880#comment-13619880
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Robert Joseph Evans commented on HADOOP-9426:
---------------------------------------------

[~tucu00],  The reason for putting this functionality in is because now that YARN is gaining
traction there are more and more tools that run on top of YARN that want this ability, similar
to how Map/Reduce uses it.  Yes -libjars is a great way to ship dependencies for Map/Reduce,
but MR also exposes this through other interfaces and for non-mapreduce tools it would be
nice to have this functionality in a common place.  I am not sure that hadoop-common is the
best place for this.  yarn might be a better place, but I think common is an OK place.
                
> Hadoop should expose Jar location utilities on its public API
> -------------------------------------------------------------
>
>                 Key: HADOOP-9426
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9426
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 1.0.0, 1.1.0, 2.0.0-alpha
>            Reporter: Nick Dimiduk
>         Attachments: 0001-HADOOP-9426-Promote-JarFinder-out-of-test-jar.patch, 0001-HADOOP-9426-Promote-JarFinder-out-of-test-jar.patch
>
>
> The facilities behind JobConf#setJarByClass and the JarFinder utility in test are both
generally useful. As the core platform, these should be published as part of the public API.
In addition to HBase, they are probably useful for Pig and Hive as well. See also HBASE-2588,
HBASE-5317, HBASE-8140.

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