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Posted to solr-user@lucene.apache.org by Michael Bulla <Mi...@iteratec.de> on 2013/11/15 08:59:13 UTC
Is there a max Size for synony-Definition?

Hi there,

yesterday I had a strange problem with using synonyms in Solr 4.3.0

In my schema there is the default-configuration for synonyms defined

      <analyzer type="query">
        <tokenizer class="solr.WhitespaceTokenizerFactory"/>
        <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt" ignoreCase="true" expand="true"/>
        <filter class="solr.StopFilterFactory"
                ignoreCase="true"
                words="stopwords.txt"
                enablePositionIncrements="true"
                />
        <filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="0" catenateNumbers="0" catenateAll="0" splitOnCaseChange="1"/>
        <filter class="solr.LowerCaseFilterFactory"/>
        <filter class="solr.KeywordMarkerFilterFactory" protected="protwords.txt"/>
        <filter class="solr.PorterStemFilterFactory"/>
        <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
      </analyzer>

Everything works fine with that config, except this line

Combustion, combustión, gases, gas, humo, humos, analizador, analizadores, emisiones, contaminante, O2, oxígeno, oxigeno, carbono, NOx, NO, NO2, SO2, CO, H2S, HC, hidrocarburos, inquemados, quemador, caldera, horno, chimenea

When searching for any of that terms, I don't get any result. Removing special chars didn't make it better, removing numeric didn't make it better. When shorting that list down to ~90 characters (10 terms) I got results again. Is there some kind of length constraint when using synonyms?

Regards,
Michael


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Michael Bulla
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