[jira] [Created] (SOLR-5105) Merge CoreAdmin and Collections API

["Alan Woodward (JIRA)" <ji...@apache.org>]

Alan Woodward created SOLR-5105:
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             Summary: Merge CoreAdmin and Collections API
                 Key: SOLR-5105
                 URL: https://issues.apache.org/jira/browse/SOLR-5105
             Project: Solr
          Issue Type: Improvement
            Reporter: Alan Woodward
             Fix For: 5.0


For 5.0, we should remove the distinction between the Core Admin API and the Collections API.  It's confusing for users, and adds unnecessary complexity and duplication to the core code.

* Under the hood, the AdminHandlers should just be deserializing the various core parameters and then passing them onto the CoreContainer to do the actual work.
* The CoreContainer API can be cleaned up (need a distinction between loading existing cores and creating new ones, remove the various 'registerCore' methods) 
* ZkContainer should become a subclass of CoreContainer (maybe CloudCoreContainer?) and deal with the zookeeper interactions, while the base class deals with local cores.
* The CoreContainer should be dealing with all core name logic (aliases, collections, etc).  This will have the nice side-effect of simplifying the core dispatch logic as well.

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