[SOLR-3390] Highlighting issue with multi-word synonyms causes to highlight the wrong terms

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 3.6
• Component/s: highlighter, query parsers
• Labels: highlighter multi-word solr synonyms

Environment

Windows 7. (Development machine, not the server)

• Assignee: Steven Rowe
• Reporter: Rahul Babulal
• Created: 21/Apr/12 00:51
• Updated: 18/Apr/17 20:52
• Resolved: 18/Apr/17 20:52

Description

I am using solr 3.6 and when I have multi-words synonyms the highlighting results have the wrong word highlighted.

If I have the below entry in the synonyms file:
dns, domain name system

If I index something like: "A sample dns entry explaining the details".

Searching for "name" (without quotes) in the highlight results/snippets I get : "A sample dns <em>entry</em> explaining the details". (The token "entry" overlaps with the token "name" in the analysis.jsp)

Searching for "system" (without quotes) in the highlight results/snippets I get : "A sample dns entry <em>explaining</em> the details". (The token "explaining" overlaps with the token "system" in the analysis.jsp)

Here is my schema field Type:
<fieldType name="text_general" class="solr.TextField" positionIncrementGap="100">
<analyzer type="index">
<charFilter class="solr.HTMLStripCharFilterFactory"/>
<tokenizer class="solr.StandardTokenizerFactory"/>
<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.LowerCaseFilterFactory"/>
<filter class="solr.PorterStemFilterFactory"/>
</analyzer>
<analyzer type="query">
<tokenizer class="solr.StandardTokenizerFactory"/>
<filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt" ignoreCase="true" expand="false"/>
<filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" enablePositionIncrements="true" />
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.PorterStemFilterFactory"/>
</analyzer>
</fieldType>