Fixed - Config node address should be filled out.

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

@@ -92,6 +92,10 @@ public class ClusterConnectionManager extends MasterSlaveConnectionManager {
     public ClusterConnectionManager(ClusterServersConfig cfg, Config config, UUID id) {
         super(config, id);
 
+        if (cfg.getNodeAddresses().isEmpty()) {
+            throw new IllegalArgumentException("At least one cluster node should be defined!");
+        }
+        
         this.config = create(cfg);
         initTimer(this.config);
         

redisson/src/main/java/org/redisson/connection/SentinelConnectionManager.java

@@ -78,6 +78,9 @@ public class SentinelConnectionManager extends MasterSlaveConnectionManager {
         if (cfg.getMasterName() == null) {
             throw new IllegalArgumentException("masterName parameter is not defined!");
         }
+        if (cfg.getSentinelAddresses().isEmpty()) {
+            throw new IllegalArgumentException("At least one sentinel node should be defined!");
+        }
 
         this.config = create(cfg);
         initTimer(this.config);