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https://issues.apache.org/jira/browse/HBASE-4336?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13249915#comment-13249915
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Jesse Yates commented on HBASE-4336:
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I'm giving up the torch on this one, if someone wants to pick it up. The 
combination of having other, more pressing stuff and this being a _total 
nightmare_ given the dependency interweavings makes it really hard (read: lots 
of time, but theoretically doable). I could spend the time if we just wanted to 
make two modules - main and security since those are fairly well separated. 
Otherwise, I've gotta pass :-/
                
> Convert source tree into maven modules
> --------------------------------------
>
>                 Key: HBASE-4336
>                 URL: https://issues.apache.org/jira/browse/HBASE-4336
>             Project: HBase
>          Issue Type: Task
>          Components: build
>            Reporter: Gary Helmling
>            Priority: Critical
>             Fix For: 0.96.0
>
>
> When we originally converted the build to maven we had a single "core" module 
> defined, but later reverted this to a module-less build for the sake of 
> simplicity.
> It now looks like it's time to re-address this, as we have an actual need for 
> modules to:
> * provide a trimmed down "client" library that applications can make use of
> * more cleanly support building against different versions of Hadoop, in 
> place of some of the reflection machinations currently required
> * incorporate the secure RPC engine that depends on some secure Hadoop classes
> I propose we start simply by refactoring into two initial modules:
> * core - common classes and utilities, and client-side code and interfaces
> * server - master and region server implementations and supporting code
> This would also lay the groundwork for incorporating the HBase security 
> features that have been developed.  Once the module structure is in place, 
> security-related features could then be incorporated into a third module -- 
> "security" -- after normal review and approval.  The security module could 
> then depend on secure Hadoop, without modifying the dependencies of the rest 
> of the HBase code.

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