Old config:

<field name="user" type="partial_text_general"/>

  <fieldType name="partial_text_general" class="solr.TextField" positionIncrementGap="100" multiValued="true">
        <analyzer type="index">
                <tokenizer class="solr.WhitespaceTokenizerFactory"/>
                <filter class="solr.WordDelimiterGraphFilterFactory" generateWordParts="1" generateNumberParts="0" splitOnCaseChange="1" catenateWords="1" catenateNumbers="1" preserveOriginal="1" splitOnNumerics="0"/>
                <filter class="solr.LowerCaseFilterFactory"/>
                <filter class="solr.EnglishPossessiveFilterFactory"/>
                <filter class="solr.KeywordMarkerFilterFactory" protected="protwords.txt"/>
                <filter class="solr.EnglishMinimalStemFilterFactory"/>
                <filter class="solr.EdgeNGramFilterFactory" minGramSize="2" maxGramSize="45" />
        </analyzer>
        <analyzer type="query">
                <tokenizer class="solr.WhitespaceTokenizerFactory"/>
                <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt" ignoreCase="true" expand="true"/>
                <filter class="solr.WordDelimiterGraphFilterFactory" generateWordParts="1" generateNumberParts="0" splitOnCaseChange="1" catenateWords="1" catenateNumbers="1" splitOnNumerics="0"/>
                <filter class="solr.LowerCaseFilterFactory"/>
                <filter class="solr.EnglishPossessiveFilterFactory"/>
                <filter class="solr.KeywordMarkerFilterFactory" protected="protwords.txt"/>
                <filter class="solr.EnglishMinimalStemFilterFactory"/>
        </analyzer>
  </fieldType>



New config:

<field name="user" type="string" indexed="true" required="true" stored="true"/>
<fieldType name="string" class="solr.StrField" omitNorms="true" sortMissingLast="true"/>