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https://issues.apache.org/jira/browse/HADOOP-12499?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14968795#comment-14968795
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Steve Loughran commented on HADOOP-12499:
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bq. For example, hadoop-common-client should not depend on guava. 

doesn't that mean cutting out all {{@visibleFortesting}} and Precondition 
logic? I'm not a fan of Guava, but it does provide stuff that we need.

Have you managed to rm it from HDFS-client? What was lost in the process —and 
how did you replace it?

> Create a client jar for hadoop-common
> -------------------------------------
>
>                 Key: HADOOP-12499
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12499
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Haohui Mai
>            Assignee: Haohui Mai
>
> HDFS-6200 has refactor the HDFS client implementations into the 
> {{hadoop-hdfs-client}} module. However, the client module still depends on 
> {{hadoop-common}} which contains both the implementation of hadoop server and 
> clients.
> This jira proposes to separate client-side implementation of 
> {{hadoop-common}} to a new module {{hadoop-common-client}} so that both the 
> yarn and the hdfs client no longer need to transitively bring in dependency 
> in the server side.
> Per feedbacks from [~steve_l] and [~cmccabe], the development will happen in 
> a separate branch.



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