ibilley7 commented on code in PR #5732:
URL: https://github.com/apache/accumulo/pull/5732#discussion_r2201238882


##########
server/base/src/main/java/org/apache/accumulo/server/manager/LiveTServerSet.java:
##########
@@ -211,10 +213,23 @@ static class TServerInfo {
   // The set of entries in zookeeper without locks, and the first time each 
was noticed
   private final Map<ServiceLockPath,Long> locklessServers = new HashMap<>();
 
-  public LiveTServerSet(ServerContext context, Listener cback) {
-    this.cback = cback;
+  public LiveTServerSet(ServerContext context) {
+    this.cback = new AtomicReference<>(null);
     this.context = context;
-    this.context.getZooCache().addZooCacheWatcher(this);
+  }
+
+  public void setCback(Listener cback) {

Review Comment:
   I found that this seems to complicate the testSessionIds test in 
LiveTServerTests, which uses a mock of the Listener class. How should I go 
about this? Is this change worth being made? 



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