Incorrect map key encoding makes hmget return no fields when string keys are used

src/main/java/com/lambdaworks/redis/RedisAsyncConnection.java

@@ -415,7 +415,7 @@ public class RedisAsyncConnection<K, V> extends ChannelInboundHandlerAdapter {
     }
 
     public Future<List<V>> hmget(K key, K... fields) {
-        CommandArgs<K, V> args = new CommandArgs<K, V>(codec).addKey(key).addKeys(fields);
+        CommandArgs<K, V> args = new CommandArgs<K, V>(codec).addKey(key).addMapKeys(fields);
         return dispatch(HMGET, new ValueListOutput<K, V>(codec), args);
     }
 

src/test/java/org/redisson/RedissonMapTest.java

@@ -146,6 +146,22 @@ public class RedissonMapTest extends BaseTest {
         Assert.assertEquals(expectedMap, filtered);
     }
 
+    @Test
+    public void testGetAllWithStringKeys() {
+        RMap<String, Integer> map = redisson.getMap("getAllStrings");
+        map.put("A", 100);
+        map.put("B", 200);
+        map.put("C", 300);
+        map.put("D", 400);
+
+        Map<String, Integer> filtered = map.getAll(new HashSet<String>(Arrays.asList("B", "C", "E")));
+
+        Map<String, Integer> expectedMap = new HashMap<String, Integer>();
+        expectedMap.put("B", 200);
+        expectedMap.put("C", 300);
+        Assert.assertEquals(expectedMap, filtered);
+    }
+
     @Test
     public void testFilterKeys() {
         RMap<Integer, Integer> map = redisson.getMap("filterKeys");