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https://issues.apache.org/jira/browse/MAILBOX-44?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13024743#comment-13024743
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Norman Maurer commented on MAILBOX-44:
--------------------------------------

Hi there,

for the mailbox api part I suggest you to have a look at the jpa 
implementation. This will give you a feeling about what needs to get done. 
After that have a look at the store module which contains everything you need 
to write your implementation. It already have many abstract base classes which 
just needs to get extended. Once you got the idea its really straight forward

And yes james use spring to load the right classes depending on the .xml files

> [gsoc2011] Design and implement a distributed mailbox using Hadoop
> ------------------------------------------------------------------
>
>                 Key: MAILBOX-44
>                 URL: https://issues.apache.org/jira/browse/MAILBOX-44
>             Project: James Mailbox
>          Issue Type: New Feature
>            Reporter: Eric Charles
>            Assignee: Norman Maurer
>              Labels: gsoc2011
>
> Context: The mailbox subproject (http://james.apache.org/mailbox/) supports 
> maildir, SQL database (via JPA) and Java Content Repository (JCR) as 
> technology for mail storage. This flexibility is achieved thanks to a API 
> design that abstracts mail storage from the mail protocols.
> Task: We need to implement mailbox storage as a distributed system on top of 
> Hadoop HDFS. The James mailbox API will be used. A first step is to design 
> how to interact with Hadoop (native api, gora incubator at apache,...) and 
> deal with specific performance questions related to mail loading/parsing in a 
> distributed system (use map/reduce or not, use existing local lucene indexes 
> for search,...). The second step is to implement the HDFS mailbox (maildir 
> mailbox is similar because is stores mails as a file and can be an 
> inspiration). A single James server will still be deployed because we don't 
> have any distributed UID generation.
> Mentor: eric at apache dot org
> Complexity: medium 

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