After some testsing, I managed to get proper functionning - The schema.xml is attached below (quite different from the one provided on teh wiki) (in bold the core differences) (NGramFilterFactory is the class that replace the fts_squat "partial=3 full=15", everything else is just a big hammer to smash a tiny fly) - One need to remove the "managed-schema" file in the {prefix}/server/solr/dovecot/conf. - One need to remove everything under {prefix}/server/solr/dovecot/data/ - The {prefix}/server/solr/dovecot/conf/solrconfig.xml is as below (see diff) - my dovecot.conf is : fts = solr fts_autoindex = yes fts_enforced = yes fts_decoder = decode2text fts_solr = url=http://(SOLR SERVER):8983/solr/dovecot/ --- schema.xml <?xml version="1.0" encoding="UTF-8"?> <schema name="dovecot" version="2.0"> <uniqueKey>id</uniqueKey> <FIELDTYPE NAME="STRING" CLASS="SOLR.STRFIELD" /> <FIELDTYPE NAME="LONG" CLASS="SOLR.TRIELONGFIELD" /> <FIELDTYPE NAME="BOOLEAN" CLASS="SOLR.BOOLFIELD" /> <fieldType name="text" class="solr.TextField" autoGeneratePhraseQueries="true" positionIncrementGap="100"> <analyzer type="index"> <tokenizer class="solr.StandardTokenizerFactory"/> <filter class="solr.StopFilterFactory" words="stopwords.txt" ignoreCase="true"/> <filter class="solr.WordDelimiterGraphFilterFactory" generateWordParts="1" generateNumberParts="1" splitOnCaseChange="1" splitOnNumerics="1" catenateWords="1" catenateNumbers="1" catenateAll="1"/> <filter class="solr.FlattenGraphFilterFactory"/> <!-- required on index analyzers after graph filters --> <filter class="solr.LowerCaseFilterFactory"/> <FILTER CLASS="SOLR.NGRAMFILTERFACTORY" MINGRAMSIZE="3" MAXGRAMSIZE="15" /> <filter class="solr.KeywordMarkerFilterFactory" protected="protwords.txt"/> <filter class="solr.PorterStemFilterFactory"/> </analyzer> <analyzer type="query"> <tokenizer class="solr.StandardTokenizerFactory"/> <filter class="solr.SynonymGraphFilterFactory" expand="true" ignoreCase="true" synonyms="synonyms.txt"/> <filter class="solr.FlattenGraphFilterFactory"/> <!-- required on index analyzers after graph filters --> <filter class="solr.StopFilterFactory" words="stopwords.txt" ignoreCase="true"/> <filter class="solr.WordDelimiterGraphFilterFactory" generateWordParts="1" generateNumberParts="1" splitOnCaseChange="1" splitOnNumerics="1" catenateWords="1" catenateNumbers="1" catenateAll="1"/> <filter class="solr.LowerCaseFilterFactory"/> <FILTER CLASS="SOLR.NGRAMFILTERFACTORY" MINGRAMSIZE="3" MAXGRAMSIZE="15" /> <filter class="solr.KeywordMarkerFilterFactory" protected="protwords.txt"/> <filter class="solr.PorterStemFilterFactory"/> </analyzer> </fieldType> <field name="_version_" type="long" indexed="true" stored="true"/> <field name="bcc" type="text" indexed="true" stored="false"/> <field name="body" type="text" indexed="true" stored="false"/> <field name="box" type="string" indexed="true" required="true" stored="true"/> <field name="cc" type="text" indexed="true" stored="false"/> <field name="from" type="text" indexed="true" stored="false"/> <field name="hdr" type="text" indexed="true" stored="false"/> <field name="id" type="string" indexed="true" required="true" stored="true"/> <field name="subject" type="text" indexed="true" stored="false"/> <field name="to" type="text" indexed="true" stored="false"/> <field name="uid" type="long" indexed="true" required="true" stored="true"/> <field name="user" type="string" indexed="true" required="true" stored="true"/> </schema> ------ diff solrconfig --- /data/backup/solr/solrconfig.xml.joan 2018-12-08 14:31:47.716344505 +0000 +++ solrconfig.xml 2018-12-08 15:36:28.948267225 +0000 @@ -1128,6 +1128,7 @@ See http://wiki.apache.org/solr/GuessingFieldTypes --> + <schemaFactory class="ClassicIndexSchemaFactory"></schemaFactory> <updateProcessor class="solr.UUIDUpdateProcessorFactory" name="uuid"/> <updateProcessor class="solr.RemoveBlankFieldUpdateProcessorFactory" name="remove-blank"/> <updateProcessor class="solr.FieldNameMutatingUpdateProcessorFactory" name="field-name-mutating"> @@ -1158,43 +1159,8 @@ <str>yyyy-MM-dd</str> </arr> </updateProcessor> - <updateProcessor class="solr.AddSchemaFieldsUpdateProcessorFactory" name="add-schema-fields"> - <lst name="typeMapping"> - <str name="valueClass">java.lang.String</str> - <str name="fieldType">text_general</str> - <lst name="copyField"> - <str name="dest">*_str</str> - <int name="maxChars">256</int> - </lst> - <!-- Use as default mapping instead of defaultFieldType --> - <bool name="default">true</bool> - </lst> - <lst name="typeMapping"> - <str name="valueClass">java.lang.Boolean</str> - <str name="fieldType">booleans</str> - </lst> - <lst name="typeMapping"> - <str name="valueClass">java.util.Date</str> - <str name="fieldType">pdates</str> - </lst> - <lst name="typeMapping"> - <str name="valueClass">java.lang.Long</str> - <str name="valueClass">java.lang.Integer</str> - <str name="fieldType">plongs</str> - </lst> - <lst name="typeMapping"> - <str name="valueClass">java.lang.Number</str> - <str name="fieldType">pdoubles</str> - </lst> - </updateProcessor> <!-- The update.autoCreateFields property can be turned to false to disable schemaless mode --> - <updateRequestProcessorChain name="add-unknown-fields-to-the-schema" default="${update.autoCreateFields:true}" - processor="uuid,remove-blank,field-name-mutating,parse-boolean,parse-long,parse-double,parse-date,add-schema-fields"> - <processor class="solr.LogUpdateProcessorFactory"/> - <processor class="solr.DistributedUpdateProcessorFactory"/> - <processor class="solr.RunUpdateProcessorFactory"/> - </updateRequestProcessorChain> <!-- Deduplication @@ -1273,7 +1239,6 @@ <!-- The following response writers are implicitly configured unless overridden... --> - <!-- <queryResponseWriter name="xml" default="true" class="solr.XMLResponseWriter" /> @@ -1284,7 +1249,6 @@ <queryResponseWriter name="phps" class="solr.PHPSerializedResponseWriter"/> <queryResponseWriter name="csv" class="solr.CSVResponseWriter"/> <queryResponseWriter name="schema.xml" class="solr.SchemaXmlResponseWriter"/> - --> <queryResponseWriter name="json" class="solr.JSONResponseWriter"> <!-- For the purposes of the tutorial, JSON responses are written as @@ -1293,7 +1257,7 @@ --> <str name="content-type">text/plain; charset=UTF-8</str> </queryResponseWriter> - + <!-- Custom response writers can be declared as needed... -->