yuqi1129 commented on code in PR #6770:
URL: https://github.com/apache/gravitino/pull/6770#discussion_r2022019458


##########
authorizations/authorization-ranger/src/main/java/org/apache/gravitino/authorization/ranger/RangerAuthorizationPlugin.java:
##########
@@ -734,19 +735,18 @@ public Boolean onUserAdded(User user) throws 
AuthorizationPluginException {
 
   @Override
   public Boolean onUserRemoved(User user) throws AuthorizationPluginException {
-    VXUserList list = rangerClient.searchUser(ImmutableMap.of("name", 
user.name()));
-    if (list.getListSize() == 0) {
-      LOG.warn("The user({}) doesn't exist in the Ranger!", user);
+    Optional<Long> userId = getUserId(user.name());

Review Comment:
   Since you have use `Optional`, I think we can use the following format:
   
   return userId.map(id -> {
   rangerClient.deleteUser(id)
   return True;
   ).orElseGet(() -> {
   Log.warn
    return false;
   )



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