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From "Jesse Yates (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4336) Convert source tree into maven modules
Date Mon, 09 Apr 2012 20:51:17 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4336?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13250170#comment-13250170
] 

Jesse Yates commented on HBASE-4336:
------------------------------------

bq. client module with the minimum set of dependencies would a big thing

Yup, that was part of the my original plan. Its just painful to do. :)

Agree that follow on tickets would/should be useful for this. My original intention with this
patch to do it wholesale (master, region, client, etc.), but I think we can get away with
just a couple small ones (see my above comment) without too much work.

bq. BC = backwards compatibility. 

Still think my argument holds above for preserving this as well.  
                
> 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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