aparnasuresh85 commented on code in PR #2585:
URL: https://github.com/apache/solr/pull/2585#discussion_r1693097222


##########
solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/CollectionPropertiesZkStateReader.java:
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@@ -50,17 +50,14 @@ public class CollectionPropertiesZkStateReader implements 
Closeable {
    * notified when the properties of the collection change. When a 
collection's properties change,
    * all registered observers for that collection are notified by a 
"collectionPropWatcher".
    */
-  private ConcurrentHashMap<String, CollectionWatch<CollectionPropsWatcher>>
+  private final ConcurrentHashMap<String, 
CollectionWatch<CollectionPropsWatcher>>
       collectionPropsObservers = new ConcurrentHashMap<>();
 
   /** Used to submit notifications to Collection Properties watchers in order 
*/
   private final ExecutorService collectionPropsNotifications =
       ExecutorUtil.newMDCAwareSingleThreadExecutor(
           new SolrNamedThreadFactory("collectionPropsNotifications"));
 
-  private final ExecutorService notifications =

Review Comment:
   Reverted to previous commit



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