refactoring

redisson/src/main/java/org/redisson/connection/pool/ConnectionPool.java

@@ -193,7 +193,7 @@ abstract class ConnectionPool<T extends RedisConnection> {
                 iterator.remove();
             }
         }
-        while (!entriesCopy.isEmpty()) {
+        if (!entriesCopy.isEmpty()) {
             ClientConnectionsEntry entry = config.getLoadBalancer().getEntry(entriesCopy);
             return acquireConnection(command, entry);
         }

redisson/src/main/java/org/redisson/transaction/BaseTransactionalMap.java

@@ -177,9 +177,7 @@ public class BaseTransactionalMap<K, V> {
             }
             
             operations.add(operation);
-            for (HashValue key : state.keySet()) {
-                state.put(key, MapEntry.NULL);
-            }
+            state.replaceAll((k, v) -> MapEntry.NULL);
             deleted = true;
             result.trySuccess(res);
         });

redisson/src/main/java/org/redisson/transaction/BaseTransactionalSet.java

@@ -147,9 +147,7 @@ public abstract class BaseTransactionalSet<V> extends BaseTransactionalObject {
             }
             
             operations.add(operation);
-            for (HashValue key : state.keySet()) {
-                state.put(key, NULL);
-            }
+            state.replaceAll((k, v) -> NULL);
             deleted = true;
             result.trySuccess(res);
         });