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From "Noble Paul (JIRA)" <j...@apache.org>
Subject [jira] Created: (SOLR-1306) Support pluggable peristence/loading of solr.xml details
Date Thu, 23 Jul 2009 05:45:14 GMT
Support pluggable peristence/loading of solr.xml details
--------------------------------------------------------

                 Key: SOLR-1306
                 URL: https://issues.apache.org/jira/browse/SOLR-1306
             Project: Solr
          Issue Type: New Feature
            Reporter: Noble Paul


Persisting and loading details from one xml is fine if the no:of cores are small and the no:of
cores are few/fixed . If there are 10's of thousands of cores in a single box adding a new
core (with persistent=true) becomes very expensive because every core creation has to write
this huge xml. 

Moreover , there is a good chance that the file gets corrupted and all the cores become unusable
. In that case I would prefer it to be stored in a centralized DB which is backed up/replicated
and all the information is available in a centralized location. 

We may need to refactor CoreContainer to have a pluggable implementation which can load/persist
the details . The default implementation should write/read from/to solr.xml . And the class
should be pluggable as follows in solr.xml
{code:xml}
<solr dataProvider="com.foo.FoodataProvider">
</solr>
{code}
There will be a new interface (or abstract class ) called SolrDataProvider which this class
must implement

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