yittg commented on a change in pull request #16607:
URL: https://github.com/apache/flink/pull/16607#discussion_r679593191



##########
File path: 
flink-kubernetes/src/main/java/org/apache/flink/kubernetes/kubeclient/resources/KubernetesConfigMapSharedInformer.java
##########
@@ -21,18 +21,17 @@
 import org.apache.flink.kubernetes.kubeclient.KubernetesConfigMapSharedWatcher;
 
 import io.fabric8.kubernetes.api.model.ConfigMap;
-import io.fabric8.kubernetes.api.model.ConfigMapList;
 import io.fabric8.kubernetes.client.NamespacedKubernetesClient;
 
 import java.util.Map;
 
 /** The shared informer for {@link ConfigMap}, it can be used as a shared 
watcher. */
 public class KubernetesConfigMapSharedInformer
-        extends KubernetesSharedInformer<ConfigMap, ConfigMapList, 
KubernetesConfigMap>
+        extends KubernetesSharedInformer<ConfigMap, KubernetesConfigMap>
         implements KubernetesConfigMapSharedWatcher {
 
     public KubernetesConfigMapSharedInformer(
             NamespacedKubernetesClient client, Map<String, String> labels) {
-        super(client, ConfigMap.class, ConfigMapList.class, labels, 
KubernetesConfigMap::new);
+        super(client, client.configMaps().withLabels(labels), 
KubernetesConfigMap::new);

Review comment:
       Should we add empty check here like before in the 
`KubernetesSharedInformer`?
   
   ```
   Preconditions.checkArgument(
                   !CollectionUtil.isNullOrEmpty(labels), "Labels must not be 
null or empty");
   ```




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