Implemented #159: Upgrade Solr from 9.6.1 to 9.7.0

src/search/Dockerfile

@@ -1,4 +1,4 @@
-FROM solr:9.6.1
+FROM solr:9.7.0
 
 # Copy the custom config files in. Note that in order to create the collection with this config, 
 # we need to do a docker run with "solr-precreate content /opt/solr/server/solr/configsets/content"

src/search/content/conf/solrconfig.xml

@@ -35,7 +35,7 @@
        that you fully re-index after changing this setting as it can
        affect both how text is indexed and queried.
   -->
-  <luceneMatchVersion>9.10</luceneMatchVersion>
+  <luceneMatchVersion>9.11</luceneMatchVersion>
 
   <!-- <lib/> directives can be used to instruct Solr to load any Jars
        identified and use them to resolve any "plugins" specified in
@@ -360,6 +360,21 @@
       -->
     <maxBooleanClauses>${solr.max.booleanClauses:1024}</maxBooleanClauses>
 
+    <!-- Minimum acceptable prefix-size for prefix-based queries.
+
+         Prefix-based queries consume memory in proportion to the number of terms in the index
+         that start with that prefix.  Short prefixes tend to match many many more indexed-terms
+         and consume more memory as a result, sometimes causing stability issues on the node.
+
+         This setting allows administrators to require that prefixes meet or exceed a specified
+         minimum length requirement.  Prefix queries that don't meet this requirement return an
+         error to users.  The limit may be overridden on a per-query basis by specifying a
+         'minPrefixQueryTermLength' local-param value.
+
+         The flag value of '-1' can be used to disable enforcement of this limit.
+    -->
+    <minPrefixQueryTermLength>${solr.query.minPrefixLength:-1}</minPrefixQueryTermLength>
+
     <!-- Solr Internal Query Caches
          Starting with Solr 9.0 the default cache implementation used is CaffeineCache.
     -->
@@ -657,7 +672,7 @@
       <str name="pf">title^1.1 description^1.05 author^1.05 tags url content</str>
       <str name="boost">product( sum(1, log(sum(1, product(indexed_inlink_domains_count, 1.8)))), if(contains_adverts,0.5,1), if(owner_verified,1.1,1) )</str>
       <!-- end searchmysite change -->
-
+      
     </lst>
   </requestHandler>
 
@@ -911,6 +926,10 @@
     <str name="pattern">[^\w-\.]</str>
     <str name="replacement">_</str>
   </updateProcessor>
+  <updateProcessor class="solr.NumFieldLimitingUpdateRequestProcessorFactory" name="max-fields">
+    <int name="maxFields">1000</int>
+    <bool name="warnOnly">true</bool>
+  </updateProcessor>
   <updateProcessor class="solr.ParseBooleanFieldUpdateProcessorFactory" name="parse-boolean"/>
   <updateProcessor class="solr.ParseLongFieldUpdateProcessorFactory" name="parse-long"/>
   <updateProcessor class="solr.ParseDoubleFieldUpdateProcessorFactory" name="parse-double"/>
@@ -954,12 +973,11 @@
       <str name="fieldType">pdoubles</str>
     </lst>
   </updateProcessor>
+
 
   <!-- The update.autoCreateFields property can be turned to false to disable schemaless mode -->
-  <!-- start searchmysite change -->
-  <updateRequestProcessorChain name="add-unknown-fields-to-the-schema" default="${update.autoCreateFields:false}"
-           processor="uuid,remove-blank,field-name-mutating,parse-boolean,parse-long,parse-double,parse-date,add-schema-fields">
-  <!-- end searchmysite change -->
+  <updateRequestProcessorChain name="add-unknown-fields-to-the-schema" default="${update.autoCreateFields:true}"
+           processor="uuid,remove-blank,field-name-mutating,max-fields,parse-boolean,parse-long,parse-double,parse-date,add-schema-fields">
     <processor class="solr.LogUpdateProcessorFactory"/>
     <processor class="solr.DistributedUpdateProcessorFactory"/>
     <processor class="solr.RunUpdateProcessorFactory"/>