[Solr Wiki] Update of "IndexPartitioning" by HossMan

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The following page has been changed by HossMan:
http://wiki.apache.org/solr/IndexPartitioning

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+ = ABOUT THIS DOCUMENT =
+ 
+ This document was created as a brainstorming exercise, and a road map towards possible implementations -- as of 2008-10-29 it does not describe any particular features of Solr.
+ 
+ some of the basic ideas expressed here can be achieved by using multiple indexes (either on separate machines, or as [wiki:CoreAdmin separate Solr Cores on the same machine]) with the same schema and distributed searching over these indexes when you need "cross partition" searching.
+ 
  = Overview of Idea =
  
  In addition to the goal of allowing a single Application Server instance (ie: port) to run multiple Solr webapp instances (ie: the same war, duplicated several times with different names, each with their own configs/data) there has been some discussion about the idea of allowing a single Solr webapp to support "partitioning" of the index -- either based on a particular field value, or based on an explicit "partition name" used when issuing updates.