Modified: sites/solr/guide/solr/latest/upgrade-notes/major-changes-in-solr-9.html URL: http://svn.apache.org/viewvc/sites/solr/guide/solr/latest/upgrade-notes/major-changes-in-solr-9.html?rev=1089253&r1=1089252&r2=1089253&view=diff ============================================================================== --- sites/solr/guide/solr/latest/upgrade-notes/major-changes-in-solr-9.html (original) +++ sites/solr/guide/solr/latest/upgrade-notes/major-changes-in-solr-9.html Thu Mar 6 15:24:57 2025 @@ -1204,7 +1204,7 @@ Due to changes in Lucene 9, that isnR <div class="sect2"> <h3 id="configuration"><a class="anchor" href="#configuration"></a>Configuration</h3> <div class="paragraph"> -<p>In solrconfig.xml, the <code>indexSearcherExecutorThreads</code> now defaults to 0. +<p>In <code>solr.xml</code>, the <code>indexSearcherExecutorThreads</code> now defaults to 0. Therefore, multi-threaded search execution is disabled at a node-level by default. It is currently recommended to only use an <code>indexSearcherExecutorThreads > 0</code> if all query requests sent to Solr opt-in to multiThreaded search. Additionally, <code>indexSearcherExecutorThreads = -1</code> can be given to use the number of available CPU threads available to Solr. @@ -1228,6 +1228,9 @@ This is a breaking change, and we apolog <code><lib/></code> directives should be considered deprecated and will be removed entirely in Solr 10.0. Current users of <code><lib/></code> have a number of options to ensure their libraries remain on Solr’s classpath, including: <code>SOLR_MODULES</code>, core "lib" directories, the solr.xml <code><sharedLib></code> tag, Solr’s package manager, etc.</p> </div> +<div class="paragraph"> +<p>If you’re using the new/experimental <code>multiThreaded=true</code> parameter introduced in 9.7, you may now need to increase <code>indexSearcherExecutorThreads</code> in <code>solr.xml</code> to more fully utilize a machine than in 9.7.</p> +</div> </div> <div class="sect2"> <h3 id="partial-results"><a class="anchor" href="#partial-results"></a>Partial Results</h3>
