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From: Apache Wiki <wikidiffs@apache.org>
To: Apache Wiki <wikidiffs@apache.org>
Date: Mon, 14 Dec 2009 09:27:05 -0000
Message-ID: <20091214092705.29087.34574@eos.apache.org>
Subject: 
 =?utf-8?q?=5BSolr_Wiki=5D_Update_of_=22SpellCheckComponent=22_by_ShalinMa?=
 =?utf-8?q?ngar?=

Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Solr Wiki" for chan=
ge notification.

The "SpellCheckComponent" page has been changed by ShalinMangar.
The comment on this change is: Added note on distributed setups.
http://wiki.apache.org/solr/SpellCheckComponent?action=3Ddiff&rev1=3D39&rev=
2=3D40

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

  =

  The existing converter uses a relatively simple Regex to extract out the =
basic query terms from a query and create tokens from them.
  =

+ <<Anchor(distributed)>>
+ =3D Distributed Search Support =3D
+ =

+ <!> [[Solr1.5]]
+ =

+ SpellCheckComponent now supports distributed setups. If you are using Spe=
llCheckComponent on a request handler other than "/select", then you need t=
o provide the following two parameters:
+  * "shards" - See DistributedSearch
+  * "shards.qt" - Signals Solr that requests to shards should be sent to a=
 request handler given by this parameter
+ =

+ For example:
+ {{{
+ http://solr:8983/solr/select?q=3D*:*&spellcheck=3Dtrue&spellcheck.build=
=3Dtrue&spellcheck.q=3Dtoyata&qt=3Dspell&shards.qt=3Dspell&shards=3Dsolr-sh=
ard1:8983/solr,solr-shard2:8983/solr
+ }}}
+ =

+ If SpellCheckComponent is added to the /select request handler, then the =
"shards.qt" parameter is not required.
+ =

+ In case of a distributed request to SpellCheckComponent, the shards are r=
equested for at least five suggestions even if "spellcheck.count" is less t=
han five. Once the suggestions are collected, they are ranked by the config=
ured distance measure (default is Levenstein Distance) and then by aggregat=
e frequency.
  =

  =3D History =3D
  For discussion of the development of this feature, see [[https://issues.a=
pache.org/jira/browse/SOLR-572|SOLR-572]].