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https://issues.apache.org/jira/browse/HADOOP-14871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16168718#comment-16168718
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Bharat Viswanadham commented on HADOOP-14871:
---------------------------------------------

[~haibo.chen] What is client classloader? do you mean ApplicationClassLoader 
class?

> Hadoop RunJar needs more debug logs.
> ------------------------------------
>
>                 Key: HADOOP-14871
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14871
>             Project: Hadoop Common
>          Issue Type: Wish
>            Reporter: Haibo Chen
>            Priority: Minor
>              Labels: newbie++
>
> Hadoop RunJar does not have much logging. In one case, one user had specified 
> MAIN class in the jar and also provided the main class as one of the 
> following arguments.
> The extra argument to specify the main class was passed to the main class as 
> an argument, which caused confusing exceptions. It'd be nice to have some 
> debug logging
> so that users can be warned. 
> In another case, we could have some logging for the client classloader as 
> well.



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