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https://issues.apache.org/jira/browse/LUCENE-7698?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15871485#comment-15871485
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Ere Maijala commented on LUCENE-7698:
-------------------------------------
This seems be a regression in Solr 6.4.0. At least a quick test shows correct
results in 6.3.0.
> CommonGramsQueryFilter in the query analyzer chain breaks phrase queries
> ------------------------------------------------------------------------
>
> Key: LUCENE-7698
> URL: https://issues.apache.org/jira/browse/LUCENE-7698
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/queryparser
> Affects Versions: 6.4, 6.4.1
> Reporter: Ere Maijala
>
> CommonGramsQueryFilter breaks phrase queries. The behavior also seems to
> change with addition or removal of adjacent terms.
> Steps to reproduce:
> 1.) Download and extract Solr (in my test case version 6.4.1) somewhere.
> 2.) Modify
> server/solr/configsets/sample_techproducts_configs/conf/managed-schema and
> modify text_general fieldType by adding CommonGrams(Query)Filter before
> stopWordFilter:
> <fieldType name="text_general" class="solr.TextField"
> positionIncrementGap="100">
> <analyzer type="index">
> <tokenizer class="solr.StandardTokenizerFactory"/>
> <filter class="solr.CommonGramsFilterFactory" ignoreCase="true"
> words="stopwords.txt" />
> <filter class="solr.StopFilterFactory" ignoreCase="true"
> words="stopwords.txt" />
> <!-- in this example, we will only use synonyms at query time
> <filter class="solr.SynonymFilterFactory"
> synonyms="index_synonyms.txt" ignoreCase="true" expand="false"/>
> -->
> <filter class="solr.LowerCaseFilterFactory"/>
> </analyzer>
> <analyzer type="query">
> <tokenizer class="solr.StandardTokenizerFactory"/>
> <filter class="solr.CommonGramsQueryFilterFactory" ignoreCase="true"
> words="stopwords.txt"/>
> <filter class="solr.StopFilterFactory" ignoreCase="true"
> words="stopwords.txt" />
> <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt"
> ignoreCase="true" expand="true"/>
> <filter class="solr.LowerCaseFilterFactory"/>
> </analyzer>
> </fieldType>
> 3.) Add "with" to
> server/solr/configsets/sample_techproducts_configs/conf/stopwords.txt and
> make sure the file has correct line endings (extracted from Solr zip it seems
> to contain DOS/Windows lien endings which may break things).
> 4.) Run the techproducts example with "bin/solr -e techproducts"
> 5.) Browse to
> <http://localhost:8983/solr/techproducts/select?q=%22iPod%20with%20Video%22&debugQuery=true>
> 6.) Observe that parsedquery in the debug output is empty
> 7.) Browse to
> <http://localhost:8983/solr/techproducts/select?q=%22Apple%2060%20GB%20iPod%20with%20Video%20Playback%20Black%22&debugQuery=true>
> 8.) Observe that parsedquery contains ipod_with as expected but not
> with_video.
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