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From: Apache Wiki <wikidiffs@apache.org>
To: solr-commits@lucene.apache.org
Date: Tue, 16 Jun 2009 13:27:34 -0000
Message-ID: <20090616132734.6016.86738@eos.apache.org>
Subject: [Solr Wiki] Trivial Update of "SolrTerminology" by JohnBennett

Dear Wiki user,

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The following page has been changed by JohnBennett:
http://wiki.apache.org/solr/SolrTerminology

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     1. Specifically referring to the Lucene "Filter" class
   * '''''Searcher''''': In Solr parlance, the term "Searcher" tends to refer to an instance of the !SolrIndexSearcher class.  This class is responsible for executing all searches done against the index, and manages several caches.  There is typically  one Searcher per !SolrCore at any given time, and that searcher is used to execute all queries against that !SolrCore, but there may be additional Searchers open at a time during cache warming (in which and "old Searcher" is still serving live requests while a "new Searcher" is being warmed up).
   * '''''Shard''''': A distributed index is partitioned into "shards". Each shard corresponds to a Lucene instance and contains a disjoint subset of the documents in the index.
+  * '''''Slop''''': As in "phrase slop": the number of positions two tokens need to be moved in order to match a phrase in a query.
   * '''''Solr Home Dir''''': Also referred to as the "'''''Solr Home Directory'''''" or just "'''''Solr Home'''''" this is the main directory where Solr will look for configuration files, data, and plugins.  Knowing which directory to use as the Solr Home is the one piece of information that Solr must either assume (the default is "./solr") or be configured using some mechanism beyond Solr's normal configuration files.  An [http://svn.apache.org/repos/asf/lucene/solr/trunk/example/solr/ example Solr Home] is included in Solr releases and contains a [http://svn.apache.org/repos/asf/lucene/solr/trunk/example/solr/README.txt README.txt] explaining the directory structure.  For more information on ways to override the default Solr Home, please read SolrInstall.
   * '''''Static warming''''': What users can do using newSearcher and firstSearcher event listeners to force explicit warming actions to be taken when one of these events happens -- frequently it involves seeding one or more caches with values from "static" queries hard coded in the solrconfig.xml