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From "Lars Francke (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2170) hbase lightweight client library as a distribution
Date Sat, 06 Mar 2010 13:34:27 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12842258#action_12842258
] 

Lars Francke commented on HBASE-2170:
-------------------------------------

Now that we've moved to Maven I had a look at this. While it might be possible to build custom
assemblies for the client it won't be easy to automate - I hope Kay Kay or Paul can comment
on that as they have more experience with this

We're also looking at all the dependencies and marking them as "optional" if they are only
needed for certain features (client, server, ...). But it's Mavens philosophy that an optional
dependency is a sign for an "inefficient" build layout and that the project should be split
into multiple modules.

I haven't taken a close look at this and I'm not very familiar with the HBase source code
but it seems to me as if it would make sense to split the current "core" module in at least
three parts: _common_, _client_ and _server_. This would allow us to bundle all those classes
that are used by both components in the _common_ module which hopefully has none or very little
external dependencies.

I know that this would mean yet another big change in the source code layout so take it at
as a proposal for one possible solution to the problem. I've not been with the project for
very long but I've seen questions about how to use HBase in Java multiple times. This would
hopefully make this easier and clear it up a bit.

If you decide this is a good idea I'd be willing to spend some time on it.

> hbase lightweight client library as a distribution 
> ---------------------------------------------------
>
>                 Key: HBASE-2170
>                 URL: https://issues.apache.org/jira/browse/HBASE-2170
>             Project: Hadoop HBase
>          Issue Type: Wish
>            Reporter: Kay Kay
>
> As a wish - it would be nice to have a hbase client library (subset of the current hbase
distribution) that needs to be present at the hbase client level to interact with the master/region
servers. 
> From an app integration - users of hbase can just link against the client library as
opposed to getting the entire library to link against. 

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