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From Apache Wiki <wikidi...@apache.org>
Subject [Solr Wiki] Trivial Update of "DeploymentofSolrCoreswithZookeeper" by JasonRutherglen
Date Fri, 19 Feb 2010 19:23:01 GMT
Dear Wiki user,

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The "DeploymentofSolrCoreswithZookeeper" page has been changed by JasonRutherglen.
http://wiki.apache.org/solr/DeploymentofSolrCoreswithZookeeper?action=diff&rev1=8&rev2=9

--------------------------------------------------

  
  === Cores ===
  
- Each "cores" file is written to Zookeeper and is of the form cores_N.  This is purposefully
similar to the segment infos files written by Lucene.  The cores is stored in JSON format.
+ Each "cores" file is written to Zookeeper and is of the form cores_N, where N is the version
number.  This is purposefully similar to the segment infos files written by Lucene.  The cores
file is stored in the JSON format.
  
  Contents of the cores file:
  
@@ -81, +81 @@

  
  == CoreController ==
  
- Core deploy client that lives inside a CoreContainer.  It listens for events on a given
path, finds it's hostname in the latest file by version.  Each cores file is like Lucene's
segment infos file which describes the set of segments that make up the current index.  The
cores file defines the set of cores that should be installed on a given Solr host.
+ Core deploy client that lives inside a CoreContainer.  It listens for events on a given
path, finds it's hostname in the latest cores file by version.  Each cores file is like Lucene's
segment infos file which describes the set of segments that make up the current index.  The
cores file defines the set of cores that should be installed on a given Solr host.
  
  A default root path must be defined, for the unit tests /production is used.  
  
  == TODO ==
-  * There needs to be a deletion policy that cleans up old host files
   * Allow other Solr core management operations such as swap, rename
  

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