SOLR-6679: uncomment /suggest, but tie it to an sysprop so you have to go out of your way to enable on startup

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1645721 13f79535-47bb-0310-9956-ffa450edef68

solr/CHANGES.txt

@@ -298,9 +298,9 @@ Bug Fixes
 * SOLR-6721: ZkController.ensureReplicaInLeaderInitiatedRecovery puts replica
   in local map before writing to ZK. (shalin)
 
-* SOLR-6679: Remove suggester component from stock solrconfig.xml since
+* SOLR-6679: Disabled suggester component from techproduct solrconfig.xml since
   it caused long startup times on lage indexes even when it wasn't used.
-  (yonik)
+  (yonik, hossman)
 
 * SOLR-6738: Admin UI - Escape Data on Plugins-View (steffkes)
 

solr/server/solr/configsets/sample_techproducts_configs/conf/solrconfig.xml

@@ -1359,8 +1359,13 @@
     </arr>
   </requestHandler>
 
-  <!-- This causes long startup times on big indexes, even when never used.  See SOLR-6679
-  <searchComponent name="suggest" class="solr.SuggestComponent">
+  <!-- This is disabled by default because it currently causes long startup times on 
+       big indexes, even when never used.  See SOLR-6679 for background.
+
+       To use this suggester, set the "solr.suggester.enabled=true" system property
+    -->
+  <searchComponent name="suggest" class="solr.SuggestComponent" 
+                   enable="${solr.suggester.enabled:false}"     >
     <lst name="suggester">
       <str name="name">mySuggester</str>
       <str name="lookupImpl">FuzzyLookupFactory</str>      
@@ -1371,7 +1376,8 @@
     </lst>
   </searchComponent>
 
-  <requestHandler name="/suggest" class="solr.SearchHandler" startup="lazy">
+  <requestHandler name="/suggest" class="solr.SearchHandler" 
+                  startup="lazy" enable="${solr.suggester.enabled:false}" >
     <lst name="defaults">
       <str name="suggest">true</str>
       <str name="suggest.count">10</str>