Solr 7, exact phrase search, empty results for some records

[damian.pawski]

Hi, 

I have updated Solr from 5.4.1 to 7.2.1.

I have updated the settings accordingly, but in some cases when I am
searching for an exact phrase surrounded by quotes I am getting 0 results.

In 5.4.1 I have 
 <fieldType name="text" class="solr.TextField" positionIncrementGap="100">
      <analyzer type="index">
        <tokenizer class="solr.StandardTokenizerFactory"/>
        
        <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt"
ignoreCase="true" expand="true"/>
       
        <filter class="solr.StopFilterFactory" ignoreCase="true"
words="stopwords.txt" />
        <filter class="solr.WordDelimiterFilterFactory"
generateWordParts="1" generateNumberParts="1" catenateWords="1"
catenateNumbers="1" catenateAll="0" splitOnCaseChange="1"
preserveOriginal="1"/>
        <filter class="solr.LowerCaseFilterFactory"/>
        <filter class="solr.EnglishPossessiveFilterFactory"/>
        <filter class="solr.ASCIIFoldingFilterFactory"/>
        
        <filter class="solr.EnglishMinimalStemFilterFactory"/>
        <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
      </analyzer>
      <analyzer type="query">
        <tokenizer class="solr.StandardTokenizerFactory"/>
        <filter class="solr.StopFilterFactory" ignoreCase="true"
words="stopwords.txt"/>
        <filter class="solr.WordDelimiterFilterFactory"
generateWordParts="1" generateNumberParts="1" catenateWords="0"
catenateNumbers="0" catenateAll="0" splitOnCaseChange="1"/>
        <filter class="solr.LowerCaseFilterFactory"/>
        <filter class="solr.EnglishPossessiveFilterFactory"/>
        <filter class="solr.ASCIIFoldingFilterFactory"/>
        
        <filter class="solr.EnglishMinimalStemFilterFactory"/>
        <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
      </analyzer>
    </fieldType>

In 7.2.1 I have 
 <fieldType name="text" class="solr.TextField" positionIncrementGap="100">
      <analyzer type="index">
        <tokenizer class="solr.StandardTokenizerFactory"/>
            <filter class="solr.SynonymGraphFilterFactory" 
synonyms="synonyms.txt"
ignoreCase="true" expand="true"/>
            
         <filter class="solr.StopFilterFactory" ignoreCase="true"
words="stopwords.txt" /> 
        
                <filter class="solr.WordDelimiterGraphFilterFactory" 
generateWordParts="1"
generateNumberParts="1" catenateWords="1" catenateNumbers="1"
catenateAll="0" splitOnCaseChange="1" preserveOriginal="1"/>        
                
                <filter class="solr.LowerCaseFilterFactory"/>
                <filter class="solr.EnglishPossessiveFilterFactory"/>
        <filter class="solr.ASCIIFoldingFilterFactory"/>
       
        <filter class="solr.EnglishMinimalStemFilterFactory"/>
        <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
                <filter class="solr.FlattenGraphFilterFactory"/>
      </analyzer>
      <analyzer type="query">
        <tokenizer class="solr.StandardTokenizerFactory"/>
                <filter class="solr.StopFilterFactory" ignoreCase="true"
words="stopwords.txt"/>
        <filter class="solr.WordDelimiterGraphFilterFactory"
generateWordParts="1" generateNumberParts="1" catenateWords="0"
catenateNumbers="0" catenateAll="0" splitOnCaseChange="1"/>
        
                <filter class="solr.LowerCaseFilterFactory"/>
                <filter class="solr.EnglishPossessiveFilterFactory"/>
        <filter class="solr.ASCIIFoldingFilterFactory"/>
       
        <filter class="solr.EnglishMinimalStemFilterFactory"/>
        <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
      </analyzer>
    </fieldType>

I couldn't find any pattern explaining, why for some records searches with
quotes work fine but for the others, 0 results are returned (I have checked
and the records that are missing are imported, as I can find 
them by the Id).

Could you point me to correct direction in terms how can I investigate this?

I have checked the results of the "..analysis..." pages on both instances of
Solr for the problematic records and in both cases I am getting the same
outcome.

Thank you
Damian




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