updating solr config towards IQSS#7662

luceneMatchVersion update should be the only real change.

conf/solr/8.11.1/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>7.3.0</luceneMatchVersion>
+ <luceneMatchVersion>8.11.1</luceneMatchVersion>
 
  <!-- <lib/> directives can be used to instruct Solr to load any Jars
  identified and use them to resolve any "plugins" specified in
@@ -75,14 +75,14 @@
  <lib dir="${solr.install.dir:../../../..}/contrib/extraction/lib" regex=".*\.jar" />
  <lib dir="${solr.install.dir:../../../..}/dist/" regex="solr-cell-\d.*\.jar" />
 
- <lib dir="${solr.install.dir:../../../..}/contrib/clustering/lib/" regex=".*\.jar" />
- <lib dir="${solr.install.dir:../../../..}/dist/" regex="solr-clustering-\d.*\.jar" />
-
  <lib dir="${solr.install.dir:../../../..}/contrib/langid/lib/" regex=".*\.jar" />
  <lib dir="${solr.install.dir:../../../..}/dist/" regex="solr-langid-\d.*\.jar" />
 
+ <lib dir="${solr.install.dir:../../../..}/dist/" regex="solr-ltr-\d.*\.jar" />
+
  <lib dir="${solr.install.dir:../../../..}/contrib/velocity/lib" regex=".*\.jar" />
  <lib dir="${solr.install.dir:../../../..}/dist/" regex="solr-velocity-\d.*\.jar" />
+
  <!-- an exact 'path' can be used instead of a 'dir' to specify a
  specific jar file. This will cause a serious error to be logged
  if it can't be loaded.
@@ -157,10 +157,20 @@
  maxBufferedDocs sets a limit on the number of documents buffered
  before flushing.
  If both ramBufferSizeMB and maxBufferedDocs is set, then
- Lucene will flush based on whichever limit is hit first. -->
+ Lucene will flush based on whichever limit is hit first.
+ The default is 100 MB. -->
  <!-- <ramBufferSizeMB>100</ramBufferSizeMB> -->
  <!-- <maxBufferedDocs>1000</maxBufferedDocs> -->
 
+ <!-- Expert: ramPerThreadHardLimitMB sets the maximum amount of RAM that can be consumed
+ per thread before they are flushed. When limit is exceeded, this triggers a forced
+ flush even if ramBufferSizeMB has not been exceeded.
+ This is a safety limit to prevent Lucene's DocumentsWriterPerThread from address space
+ exhaustion due to its internal 32 bit signed integer based memory addressing.
+ The specified value should be greater than 0 and less than 2048MB. When not specified,
+ Solr uses Lucene's default value 1945. -->
+ <!-- <ramPerThreadHardLimitMB>1945</ramPerThreadHardLimitMB> -->
+
  <!-- Expert: Merge Policy
  The Merge Policy in Lucene controls how merging of segments is done.
  The default since Solr/Lucene 3.3 is TieredMergePolicy.
@@ -241,10 +251,11 @@
  To aid in advanced debugging, Lucene provides an "InfoStream"
  of detailed information when indexing.
 
- Setting The value to true will instruct the underlying Lucene
- IndexWriter to write its debugging info the specified file
+ Setting the value to true will instruct the underlying Lucene
+ IndexWriter to write its info stream to solr's log. By default,
+ this is enabled here, and controlled through log4j2.xml
  -->
- <!-- <infoStream file="INFOSTREAM.txt">false</infoStream> -->
+ <infoStream>false</infoStream>
  </indexConfig>
 
 
@@ -408,8 +419,7 @@
  to occupy. Note that when this option is specified, the size
  and initialSize parameters are ignored.
  -->
- <filterCache class="solr.search.CaffeineCache"
- size="512"
+ <filterCache size="512"
  initialSize="512"
  autowarmCount="0"/>
 
@@ -421,8 +431,7 @@
  maxRamMB - the maximum amount of RAM (in MB) that this cache is allowed
  to occupy
  -->
- <queryResultCache class="solr.search.CaffeineCache"
- size="512"
+ <queryResultCache size="512"
  initialSize="512"
  autowarmCount="0"/>
 
@@ -432,14 +441,12 @@
  document). Since Lucene internal document ids are transient,
  this cache will not be autowarmed.
  -->
- <documentCache class="solr.search.CaffeineCache"
- size="512"
+ <documentCache size="512"
  initialSize="512"
  autowarmCount="0"/>
 
  <!-- custom cache currently used by block join -->
  <cache name="perSegFilter"
- class="solr.search.CaffeineCache"
  size="10"
  initialSize="0"
  autowarmCount="10"
@@ -695,10 +702,10 @@
  <int name="rows">10</int>
 
  <!-- Default search field
- <str name="df">text</str> 
+ <str name="df">text</str>
  -->
  <!-- Change from JSON to XML format (the default prior to Solr 7.0)
- <str name="wt">xml</str> 
+ <str name="wt">xml</str>
  -->
  </lst>
  <!-- In addition to defaults, "appends" params can be specified