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From Apache Wiki <wikidi...@apache.org>
Subject [Solr Wiki] Update of "BloomIndexComponent" by JasonRutherglen
Date Mon, 24 Aug 2009 21:21:49 GMT
Dear Wiki user,

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The following page has been changed by JasonRutherglen:
http://wiki.apache.org/solr/BloomIndexComponent

------------------------------------------------------------------------------
  
  <!> ["Solr1.5"]
  
- The !BloomIndexComponent !SearchComponent enables a fast and memory efficient membership
test of an element in a read only set.  False positives may be returned which can be tuned
using a given probability (see the errorrate parameter).  
+ The !BloomIndexComponent !SearchComponent enables a fast and memory efficient membership
test of an element in a read only set.  False positives may be returned which can be tuned
using a given probability (see the errorrate parameter of solrconfig.xml).  
  
- The Solr implementation generates the Bloom Filter per Lucene segment for a particular field
by iterating over the term dictionary.  
+ The Solr implementation generates the Bloom Filter per Lucene segment for a specified field
by iterating over the term dictionary.  
  
  see [http://en.wikipedia.org/wiki/Bloom_filter Wikipedia Bloom Filter] or
  [http://hadoop.apache.org/common/docs/current/api/org/apache/hadoop/util/bloom/BloomFilter.html
Hadoop BloomFilter]
@@ -23, +23 @@

  
  == Non-distributed Negative ==
  {{{
- http://localhost:8983/solr/bloom?q=id:1
+ http://localhost:8080/solr/bloom?q=id:1
  }}}
  
  Check the membership of the value 1 in the field id (which does not exist).
@@ -45, +45 @@

  
  == Non-distributed Positive ==
  {{{
- http://localhost:8983/solr/bloom?q=id:1
+ http://localhost:8080/solr/bloom?q=id:1
  }}}
  
  Check the membership of the value 1 in the field id (which does exist).
@@ -65, +65 @@

  </response>
  }}}
  
+ == Distributed Positive ==
+ {{{
+ http://localhost:8080/solr/bloom?shards.qt=/bloom&q=id:1&shards=localhost:8080/solr,localhost:8081/solr
+ }}}
+ {{{
+ <response>
+   <lst name="responseHeader">
+     <int name="status">0</int>
+     <int name="QTime">88</int>
+   </lst>
+   <lst name="host">
+     <lst name="responseHeader">
+       <int name="status">0</int>
+       <int name="QTime">1</int>
+     </lst>
+     <str name="exists">true</str>
+     <str name="segment">_3</str>
+     <str name="field">id</str>
+     <str name="value">1</str>
+     <str name="host">jason-laptop</str>
+   </lst>
+   <str name="exists">true</str>
+   <str name="distributed">true</str>
+ </response>
+ }}}
+ == Distributed Negative ==
+ {{{
+ http://localhost:8080/solr/bloom?shards.qt=/bloom&q=id:9999&shards=localhost:8080/solr,localhost:8081/solr
+ }}}
+ {{{
+ <response>
+   <lst name="responseHeader">
+     <int name="status">0</int>
+     <int name="QTime">18</int>
+   </lst>
+   <str name="exists">false</str>
+   <str name="distributed">true</str>
+ </response>
+ }}}
  == solrconfig.xml ==
  {{{
  <!-- Default Bloom Filter Implementation -->
  <searchComponent name="bloom" class="org.apache.solr.handler.component.BloomIndexComponent">
+   <!-- The following are all defaults -->
    <str name="dir">bloom</str> <!-- optional -->
    <str name="field">id</str> <!-- optional -->
    <boolean name="autoreload">true</boolean> <!-- optional -->

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