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From Jean-Baptiste Onofré ...@nanthrax.net>
Subject Re: OSGi and classloaders
Date Mon, 09 Jul 2012 18:44:53 GMT
Thanks for the update guys.

We are going to look for a way to handle configurations in an OSGi way 
without changing the API/dependency.

Regards
JB

On 07/09/2012 08:30 PM, Owen O'Malley wrote:
> Changing the configurations is a big and very touchy job. It is touchy in
> that it is very exposed to the users and many many applications assume the
> configuration is dealt with in particular ways. It is a requirement to
> maintain compatibility and thus that needs to be factored in to the work.
> Furthermore, you not only have the local configuration, but the way that
> configuration is done between the clients, servers, and mapreduce tasks.
> Even little changes in the past (eg. making a copy of a configuration at
> one spot) have broken both users and frameworks built on top (eg. Pig,
> Hive, Oozie).
>
> As Bobby said, Configuration is absolutely not a singleton. Many of the
> servers (JobTracker, Oozie, etc.) use configurations to keep track of the
> different contexts for each user. You could go to a dependency injection
> approach based on Guice to make it pluggable and yet context sensitive.
>
> -- Owen
>

-- 
Jean-Baptiste Onofré
jbonofre@apache.org
http://blog.nanthrax.net
Talend - http://www.talend.com



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