Fixed - Repeated new connections with AWS Elasticache serverless #5589

redisson/src/main/java/org/redisson/cluster/ClusterConnectionManager.java

@@ -847,7 +847,7 @@ public class ClusterConnectionManager extends MasterSlaveConnectionManager {
             CompletableFuture<List<RedisURI>> ipsFuture = serviceManager.resolveAll(clusterNodeInfo.getAddress());
             CompletableFuture<Void> f = ipsFuture.thenAccept(addresses -> {
                 if (addresses.size() > 1 && clusterNodeInfo.containsFlag(Flag.MASTER)) {
-                    addresses.sort(null);
+                    addresses.sort(Comparator.comparing(RedisURI::getHost));
                     Collections.shuffle(addresses, new Random(serviceManager.getId().hashCode()));
                 }
                 RedisURI address = addresses.get(0);