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Date: Wed, 18 Jul 2007 08:37:04 -0700 (PDT)
From: "Runping Qi (JIRA)" <jira@apache.org>
To: hadoop-dev@lucene.apache.org
Subject: [jira] Commented: (HADOOP-1622) Hadoop should provide a way to
 allow the user to specify jar file(s) the user job depends on
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    [ https://issues.apache.org/jira/browse/HADOOP-1622?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12513617 ] 

Runping Qi commented on HADOOP-1622:
------------------------------------


If the user's jar does not have the main function (when the user uses Aggregate, Streaming, DataJoin, etc.), his/her jar file(s) will not be picked up.

Plus, in many cases, the user's job may also depend on some third party jars. 
It is much more convenient for the user to just list the jars at job submission time than to jar them together .


> Hadoop should provide a way to allow the user to specify jar file(s) the user job depends on
> --------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-1622
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1622
>             Project: Hadoop
>          Issue Type: Improvement
>            Reporter: Runping Qi
>
> More likely than not, a user's job may depend on multiple jars.
> Right now, when submitting a job through bin/hadoop, there is no way for the user to specify that. 
> A walk around for that is to re-package all the dependent jars into a new jar or put the dependent jar files in the lib dir of the new jar.
> This walk around causes unnecessary inconvenience to the user. Furthermore, if the user does not own the main function 
> (like the case when the user uses Aggregate, or datajoin, streaming), the user has to re-package those system jar files too.
> It is much desired that hadoop provides a clean and simple way for the user to specify a list of dependent jar files at the time 
> of job submission. Someting like:
> bin/hadoop .... --depending_jars j1.jar:j2.jar 

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