diff --git a/src/main/java/com/lambdaworks/redis/cluster/RedisAdvancedClusterAsyncConnection.java b/src/main/java/com/lambdaworks/redis/cluster/RedisAdvancedClusterAsyncConnection.java
index d0bd7d986f..f1dc5f9ad1 100644
--- a/src/main/java/com/lambdaworks/redis/cluster/RedisAdvancedClusterAsyncConnection.java
+++ b/src/main/java/com/lambdaworks/redis/cluster/RedisAdvancedClusterAsyncConnection.java
@@ -1,11 +1,8 @@
 package com.lambdaworks.redis.cluster;
 
-import java.util.function.Predicate;
-
 import com.lambdaworks.redis.RedisClusterAsyncConnection;
-import com.lambdaworks.redis.cluster.api.NodeSelection;
+import com.lambdaworks.redis.RedisException;
 import com.lambdaworks.redis.cluster.api.StatefulRedisClusterConnection;
-import com.lambdaworks.redis.cluster.models.partitions.RedisClusterNode;
 
 /**
  * Advanced asynchronous and thread-safe cluster API.
@@ -20,21 +17,30 @@ public interface RedisAdvancedClusterAsyncConnection<K, V> extends RedisClusterA
     /**
      * Retrieve a connection to the specified cluster node using the nodeId. Host and port are looked up in the node list.
      * 
+     * Do not close the connections. Otherwise, unpredictable behavior will occur. The nodeId must be part of the cluster and is
+     * validated against the current topology view in {@link com.lambdaworks.redis.cluster.models.partitions.Partitions}.
+     * 
      * In contrast to the {@link RedisAdvancedClusterAsyncConnection}, node-connections do not route commands to other cluster
      * nodes
      * 
      * @param nodeId the node Id
      * @return a connection to the requested cluster node
+     * @throws RedisException if the requested node identified by {@code nodeId} is not part of the cluster
      */
     RedisClusterAsyncConnection<K, V> getConnection(String nodeId);
 
     /**
-     * Retrieve a connection to the specified cluster node using the nodeId. In contrast to the
-     * {@link RedisAdvancedClusterAsyncConnection}, node-connections do not route commands to other cluster nodes
+     * Retrieve a connection to the specified cluster node using the nodeId. Do not close the connections. Otherwise,
+     * unpredictable behavior will occur. The node must be part of the cluster and host/port are validated (exact check) against
+     * the current topology view in {@link com.lambdaworks.redis.cluster.models.partitions.Partitions}.
+     * 
+     * In contrast to the {@link RedisAdvancedClusterAsyncConnection}, node-connections do not route commands to other cluster
+     * nodes.
      * 
      * @param host the host
      * @param port the port
      * @return a connection to the requested cluster node
+     * @throws RedisException if the requested node identified by {@code host} and {@code port} is not part of the cluster
      */
     RedisClusterAsyncConnection<K, V> getConnection(String host, int port);
 
diff --git a/src/main/java/com/lambdaworks/redis/cluster/RedisAdvancedClusterConnection.java b/src/main/java/com/lambdaworks/redis/cluster/RedisAdvancedClusterConnection.java
index 11c31144bb..58ff6adad8 100644
--- a/src/main/java/com/lambdaworks/redis/cluster/RedisAdvancedClusterConnection.java
+++ b/src/main/java/com/lambdaworks/redis/cluster/RedisAdvancedClusterConnection.java
@@ -1,12 +1,8 @@
 package com.lambdaworks.redis.cluster;
 
-import java.util.function.Predicate;
-
 import com.lambdaworks.redis.RedisClusterConnection;
-import com.lambdaworks.redis.RedisFuture;
+import com.lambdaworks.redis.RedisException;
 import com.lambdaworks.redis.cluster.api.StatefulRedisClusterConnection;
-import com.lambdaworks.redis.cluster.models.partitions.Partitions;
-import com.lambdaworks.redis.cluster.models.partitions.RedisClusterNode;
 
 /**
  * Advanced synchronous and thread-safe cluster API.
@@ -19,21 +15,30 @@
 public interface RedisAdvancedClusterConnection<K, V> extends RedisClusterConnection<K, V> {
 
     /**
-     * Retrieve a connection to the specified cluster node using the nodeId. Host and port are looked up in the node list. In
-     * contrast to the {@link RedisAdvancedClusterConnection}, node-connections do not route commands to other cluster nodes
+     * Retrieve a connection to the specified cluster node using the nodeId. Host and port are looked up in the node list.
+     *
+     * Do not close the connections. Otherwise, unpredictable behavior will occur. The nodeId must be part of the cluster and is
+     * validated against the current topology view in {@link com.lambdaworks.redis.cluster.models.partitions.Partitions}.
+     *
+     * In contrast to the {@link RedisAdvancedClusterConnection}, node-connections do not route commands to other cluster nodes.
      * 
      * @param nodeId the node Id
      * @return a connection to the requested cluster node
+     * @throws RedisException if the requested node identified by {@code nodeId} is not part of the cluster
      */
     RedisClusterConnection<K, V> getConnection(String nodeId);
 
     /**
-     * Retrieve a connection to the specified cluster node using the nodeId. In contrast to the
-     * {@link RedisAdvancedClusterConnection}, node-connections do not route commands to other cluster nodes
+     * Retrieve a connection to the specified cluster node using the nodeId. Do not close the connections. Otherwise,
+     * unpredictable behavior will occur. The node must be part of the cluster and host/port are validated (exact check) against
+     * the current topology view in {@link com.lambdaworks.redis.cluster.models.partitions.Partitions}.
+     *
+     * In contrast to the {@link RedisAdvancedClusterConnection}, node-connections do not route commands to other cluster nodes.
      * 
      * @param host the host
      * @param port the port
      * @return a connection to the requested cluster node
+     * @throws RedisException if the requested node identified by {@code host} and {@code port} is not part of the cluster
      */
     RedisClusterConnection<K, V> getConnection(String host, int port);
 
diff --git a/src/main/java/com/lambdaworks/redis/cluster/api/StatefulRedisClusterConnection.java b/src/main/java/com/lambdaworks/redis/cluster/api/StatefulRedisClusterConnection.java
index b0a33d84f8..08b19751cf 100644
--- a/src/main/java/com/lambdaworks/redis/cluster/api/StatefulRedisClusterConnection.java
+++ b/src/main/java/com/lambdaworks/redis/cluster/api/StatefulRedisClusterConnection.java
@@ -1,5 +1,6 @@
 package com.lambdaworks.redis.cluster.api;
 
+import com.lambdaworks.redis.RedisException;
 import com.lambdaworks.redis.api.StatefulConnection;
 import com.lambdaworks.redis.api.StatefulRedisConnection;
 import com.lambdaworks.redis.cluster.RedisAdvancedClusterAsyncConnection;
@@ -43,21 +44,32 @@ public interface StatefulRedisClusterConnection<K, V> extends StatefulConnection
     RedisAdvancedClusterReactiveCommands<K, V> reactive();
 
     /**
-     * Retrieve a stateful connection to the specified cluster node using the nodeId. Host and port are looked up in the node
-     * list. In contrast to the RedisAdvancedClusterConnection, node-connections do not route commands to other cluster nodes.
-     * 
+     * Retrieve a connection to the specified cluster node using the nodeId. Host and port are looked up in the node list.
+     *
+     * Do not close the connections. Otherwise, unpredictable behavior will occur. The nodeId must be part of the cluster and is
+     * validated against the current topology view in {@link com.lambdaworks.redis.cluster.models.partitions.Partitions}.
+     *
+     * In contrast to the {@link StatefulRedisClusterConnection}, node-connections do not route commands to other cluster
+     * nodes.
+     *
      * @param nodeId the node Id
      * @return a connection to the requested cluster node
+     * @throws RedisException if the requested node identified by {@code nodeId} is not part of the cluster
      */
     StatefulRedisConnection<K, V> getConnection(String nodeId);
 
     /**
-     * Retrieve a stateful connection to the specified cluster node using the nodeId. In contrast to the
-     * RedisAdvancedClusterConnection, node-connections do not route commands to other cluster nodes.
+     * Retrieve a connection to the specified cluster node using the nodeId. Do not close the connections. Otherwise,
+     * unpredictable behavior will occur. The node must be part of the cluster and host/port are validated (exact check) against
+     * the current topology view in {@link com.lambdaworks.redis.cluster.models.partitions.Partitions}.
+     *
+     * In contrast to the {@link StatefulRedisClusterConnection}, node-connections do not route commands to other cluster
+     * nodes.
      *
      * @param host the host
      * @param port the port
      * @return a connection to the requested cluster node
+     * @throws RedisException if the requested node identified by {@code host} and {@code port} is not part of the cluster
      */
     StatefulRedisConnection<K, V> getConnection(String host, int port);